diff --git a/requirements.txt b/requirements.txt
index 62eb4a7..065674a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,4 +61,3 @@ wslink==1.12.4
 yarl>=1
     # via aiohttp
 
-opengeodeweb-microservice==1.*,>=1.0.11
diff --git a/src/opengeodeweb_viewer/config.py b/src/opengeodeweb_viewer/config.py
index 14b04a6..876fc69 100644
--- a/src/opengeodeweb_viewer/config.py
+++ b/src/opengeodeweb_viewer/config.py
@@ -21,8 +21,9 @@ def dev_config() -> None:
         os.environ["DATA_FOLDER_PATH"] = os.path.join(
             "C:/Users", os.getlogin(), "OpenGeodeWeb_Data"
         )
-    if not os.path.exists(os.environ.get("DATA_FOLDER_PATH")):
-        os.mkdir(os.environ.get("DATA_FOLDER_PATH"))
+    data_folder_path = os.environ.get("DATA_FOLDER_PATH")
+    if data_folder_path and not os.path.exists(data_folder_path):
+        os.mkdir(data_folder_path)
 
 
 def _copy_test_assets(
diff --git a/src/opengeodeweb_viewer/object/object_methods.py b/src/opengeodeweb_viewer/object/object_methods.py
index d00ecac..dcc7768 100644
--- a/src/opengeodeweb_viewer/object/object_methods.py
+++ b/src/opengeodeweb_viewer/object/object_methods.py
@@ -4,8 +4,13 @@
 # Third party imports
 from vtkmodules.vtkIOXML import vtkXMLDataReader, vtkXMLImageDataReader
 from vtkmodules.vtkCommonExecutionModel import vtkAlgorithm
-from vtkmodules.vtkRenderingCore import vtkMapper, vtkActor, vtkTexture
-from vtkmodules.vtkCommonDataModel import vtkDataObject
+from vtkmodules.vtkRenderingCore import (
+    vtkMapper,
+    vtkActor,
+    vtkTexture,
+    vtkCompositePolyDataMapper,
+)
+from vtkmodules.vtkCommonDataModel import vtkDataObject, vtkDataSet
 
 # Local application imports
 from opengeodeweb_viewer.vtk_protocol import VtkView, vtkData
@@ -32,8 +37,10 @@ def registerObject(
         renderWindow = self.getView("-1")
         renderer = renderWindow.GetRenderers().GetFirstRenderer()
         resetCamara = True
-        for registered_actor in renderer.GetActors():
-            if registered_actor.visibility == True:
+        actors = renderer.GetActors()
+        actors.InitTraversal()
+        while actor := actors.GetNextItem():
+            if actor.visibility == True:
                 resetCamara = False
         renderer.AddActor(data.actor)
         if resetCamara:
@@ -104,6 +111,8 @@ def SetBlocksVisibility(
         self, data_id: str, block_ids: list[int], visibility: bool
     ) -> None:
         mapper = self.get_object(data_id).mapper
+        if not isinstance(mapper, vtkCompositePolyDataMapper):
+            raise Exception("Mapper is not a vtkCompositePolyDataMapper")
         for block_id in block_ids:
             mapper.SetBlockVisibility(block_id, visibility)
 
@@ -111,13 +120,17 @@ def SetBlocksColor(
         self, data_id: str, block_ids: list[int], red: int, green: int, blue: int
     ) -> None:
         mapper = self.get_object(data_id).mapper
+        if not isinstance(mapper, vtkCompositePolyDataMapper):
+            raise Exception("Mapper is not a vtkCompositePolyDataMapper")
         for block_id in block_ids:
             mapper.SetBlockColor(block_id, [red / 255, green / 255, blue / 255])
 
     def clearColors(self, data_id: str) -> None:
         db = self.get_object(data_id)
-        mapper = db["mapper"]
-        reader = db["reader"]
-        reader.GetOutput().GetPointData().SetActiveScalars("")
-        reader.GetOutput().GetCellData().SetActiveScalars("")
+        mapper = db.mapper
+        reader = db.reader
+        output = reader.GetOutputDataObject(0)
+        if isinstance(output, vtkDataSet):
+            output.GetPointData().SetActiveScalars("")
+            output.GetCellData().SetActiveScalars("")
         mapper.ScalarVisibilityOff()
diff --git a/src/opengeodeweb_viewer/py.typed b/src/opengeodeweb_viewer/py.typed
index b648ac9..e69de29 100644
--- a/src/opengeodeweb_viewer/py.typed
+++ b/src/opengeodeweb_viewer/py.typed
@@ -1 +0,0 @@
-partial
diff --git a/src/opengeodeweb_viewer/rpc/mesh/mesh_protocols.py b/src/opengeodeweb_viewer/rpc/mesh/mesh_protocols.py
index 697d54f..0b54166 100644
--- a/src/opengeodeweb_viewer/rpc/mesh/mesh_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/mesh/mesh_protocols.py
@@ -109,7 +109,7 @@ def meshApplyTextures(self, rpc_params: RpcParams) -> None:
             if texture_data is None:
                 continue
             texture_file = texture_data.viewable_file
-            if not texture_file.lower().endswith(".vti"):
+            if texture_file is None or not texture_file.lower().endswith(".vti"):
                 continue
             texture_file_path = self.get_data_file_path(texture_id)
             texture_reader = vtkXMLImageDataReader()
@@ -119,7 +119,7 @@ def meshApplyTextures(self, rpc_params: RpcParams) -> None:
             texture.SetInputConnection(texture_reader.GetOutputPort())
             texture.InterpolateOn()
             reader = self.get_object(mesh_id).reader
-            output = reader.GetOutput()
+            output = reader.GetOutputAsDataSet()
             point_data = output.GetPointData()
             for i in range(point_data.GetNumberOfArrays()):
                 array = point_data.GetArray(i)
@@ -131,7 +131,7 @@ def meshApplyTextures(self, rpc_params: RpcParams) -> None:
 
     def displayAttributeOnVertices(self, data_id: str, name: str) -> None:
         reader = self.get_object(data_id).reader
-        points = reader.GetOutput().GetPointData()
+        points = reader.GetOutputAsDataSet().GetPointData()
         points.SetActiveScalars(name)
         mapper = self.get_object(data_id).mapper
         mapper.ScalarVisibilityOn()
@@ -140,7 +140,7 @@ def displayAttributeOnVertices(self, data_id: str, name: str) -> None:
 
     def displayAttributeOnCells(self, data_id: str, name: str) -> None:
         reader = self.get_object(data_id).reader
-        cells = reader.GetOutput().GetCellData()
+        cells = reader.GetOutputAsDataSet().GetCellData()
         cells.SetActiveScalars(name)
         mapper = self.get_object(data_id).mapper
         mapper.ScalarVisibilityOn()
diff --git a/src/opengeodeweb_viewer/rpc/mesh/points/mesh_points_protocols.py b/src/opengeodeweb_viewer/rpc/mesh/points/mesh_points_protocols.py
index 1c79b3f..81ed131 100644
--- a/src/opengeodeweb_viewer/rpc/mesh/points/mesh_points_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/mesh/points/mesh_points_protocols.py
@@ -2,7 +2,7 @@
 import os
 
 # Third party imports
-from wslink import register as exportRpc
+from wslink import register as exportRpc  # type: ignore
 from opengeodeweb_microservice.schemas import get_schemas_dict
 
 # Local application imports
diff --git a/src/opengeodeweb_viewer/rpc/mesh/polygons/polygons_protocols.py b/src/opengeodeweb_viewer/rpc/mesh/polygons/polygons_protocols.py
index 8ca9eec..78c5660 100644
--- a/src/opengeodeweb_viewer/rpc/mesh/polygons/polygons_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/mesh/polygons/polygons_protocols.py
@@ -20,7 +20,7 @@ class VtkMeshPolygonsView(VtkMeshView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(mesh_polygons_prefix + mesh_polygons_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/mesh/polyhedra/polyhedra_protocols.py b/src/opengeodeweb_viewer/rpc/mesh/polyhedra/polyhedra_protocols.py
index 4931b35..1d87bfd 100644
--- a/src/opengeodeweb_viewer/rpc/mesh/polyhedra/polyhedra_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/mesh/polyhedra/polyhedra_protocols.py
@@ -20,7 +20,7 @@ class VtkMeshPolyhedraView(VtkMeshView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(mesh_polyhedra_prefix + mesh_polyhedra_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/blocks/model_blocks_protocols.py b/src/opengeodeweb_viewer/rpc/model/blocks/model_blocks_protocols.py
index 6db1208..692e9ec 100644
--- a/src/opengeodeweb_viewer/rpc/model/blocks/model_blocks_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/blocks/model_blocks_protocols.py
@@ -20,7 +20,7 @@ class VtkModelBlocksView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_blocks_prefix + model_blocks_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/corners/model_corners_protocols.py b/src/opengeodeweb_viewer/rpc/model/corners/model_corners_protocols.py
index 3e6a3ee..ef37689 100644
--- a/src/opengeodeweb_viewer/rpc/model/corners/model_corners_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/corners/model_corners_protocols.py
@@ -20,7 +20,7 @@ class VtkModelCornersView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_corners_prefix + model_corners_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/edges/model_edges_protocols.py b/src/opengeodeweb_viewer/rpc/model/edges/model_edges_protocols.py
index 2ed35a3..8558d32 100644
--- a/src/opengeodeweb_viewer/rpc/model/edges/model_edges_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/edges/model_edges_protocols.py
@@ -20,7 +20,7 @@ class VtkModelEdgesView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_edges_prefix + model_edges_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/lines/model_lines_protocols.py b/src/opengeodeweb_viewer/rpc/model/lines/model_lines_protocols.py
index 76e18d4..60c1192 100644
--- a/src/opengeodeweb_viewer/rpc/model/lines/model_lines_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/lines/model_lines_protocols.py
@@ -20,7 +20,7 @@ class VtkModelLinesView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_lines_prefix + model_lines_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/model_protocols.py b/src/opengeodeweb_viewer/rpc/model/model_protocols.py
index e651d4b..61c762a 100644
--- a/src/opengeodeweb_viewer/rpc/model/model_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/model_protocols.py
@@ -27,7 +27,7 @@ class VtkModelView(VtkObjectView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_prefix + model_schemas_dict["register"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/points/model_points_protocols.py b/src/opengeodeweb_viewer/rpc/model/points/model_points_protocols.py
index 5a71046..3285c27 100644
--- a/src/opengeodeweb_viewer/rpc/model/points/model_points_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/points/model_points_protocols.py
@@ -20,7 +20,7 @@ class VtkModelPointsView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_points_prefix + model_points_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/model/surfaces/model_surfaces_protocols.py b/src/opengeodeweb_viewer/rpc/model/surfaces/model_surfaces_protocols.py
index 20a985d..aaa3a81 100644
--- a/src/opengeodeweb_viewer/rpc/model/surfaces/model_surfaces_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/model/surfaces/model_surfaces_protocols.py
@@ -20,7 +20,7 @@ class VtkModelSurfacesView(VtkModelView):
         os.path.join(os.path.dirname(__file__), "schemas")
     )
 
-    def __init__(self):
+    def __init__(self) -> None:
         super().__init__()
 
     @exportRpc(model_surfaces_prefix + model_surfaces_schemas_dict["visibility"]["rpc"])
diff --git a/src/opengeodeweb_viewer/rpc/viewer/viewer_protocols.py b/src/opengeodeweb_viewer/rpc/viewer/viewer_protocols.py
index 5039632..8e98f2a 100644
--- a/src/opengeodeweb_viewer/rpc/viewer/viewer_protocols.py
+++ b/src/opengeodeweb_viewer/rpc/viewer/viewer_protocols.py
@@ -1,6 +1,7 @@
 # Standard library imports
 import math
 import os
+from typing import cast, Any
 
 # Third party imports
 from wslink import register as exportRpc  # type: ignore
@@ -15,7 +16,7 @@
 )
 from vtkmodules.vtkInteractionStyle import vtkInteractorStyleTrackball
 from vtkmodules.vtkCommonCore import reference
-from vtkmodules.vtkCommonDataModel import vtkBoundingBox
+from vtkmodules.vtkCommonDataModel import vtkBoundingBox, vtkDataSet
 from vtkmodules.vtkCommonTransforms import vtkTransform
 from vtkmodules.vtkInteractionWidgets import vtkOrientationMarkerWidget
 from opengeodeweb_microservice.schemas import get_schemas_dict
@@ -140,6 +141,7 @@ def takeScreenshot(self, rpc_params: RpcParams) -> dict[str, str | bytes]:
         w2if.ReadFrontBufferOff()
         w2if.Update()
         output_extension = params.output_extension
+        writer: vtkPNGWriter | vtkJPEGWriter
         if output_extension == schemas.OutputExtension.PNG:
             writer = vtkPNGWriter()
         elif output_extension == schemas.OutputExtension.JPG:
@@ -167,12 +169,16 @@ def updateData(self, rpc_params: RpcParams) -> None:
         )
         params = schemas.UpdateData.from_dict(rpc_params)
         data = self.get_object(params.id)
-        reader = data["reader"]
+        reader = data.reader
         reader.Update()
-        mapper = data["mapper"]
-        tag = reference(0)
+        mapper = data.mapper
+        tag: Any = reference(0)
+        output = reader.GetOutputDataObject(0)
+        if not isinstance(output, vtkDataSet):
+            raise Exception("Output is not a vtkDataSet")
+
         scalars = vtkAbstractMapper.GetAbstractScalars(
-            reader.GetOutput(),
+            output,
             mapper.GetScalarMode(),
             mapper.GetArrayAccessMode(),
             mapper.GetArrayId(),
@@ -203,7 +209,7 @@ def computeEpsilon(self, renderer: vtkRenderer, z: float) -> float:
         renderer.SetDisplayPoint(size[0], size[1], z)
         renderer.DisplayToWorld()
         windowUpperRight = renderer.GetWorldPoint()
-        epsilon = 0
+        epsilon: float = 0.0
         for i in range(3):
             epsilon += (windowUpperRight[i] - windowLowerLeft[i]) * (
                 windowUpperRight[i] - windowLowerLeft[i]
@@ -229,7 +235,8 @@ def pickedIds(self, rpc_params: RpcParams) -> dict[str, list[str]]:
         array_ids = []
         for id in params.ids:
             bounds = self.get_object(id).actor.GetBounds()
-            if bbox.Intersects(bounds):
+            bounds_box = vtkBoundingBox(bounds)
+            if bbox.Intersects(bounds_box):
                 array_ids.append(id)
 
         return {"array_ids": array_ids}
diff --git a/src/opengeodeweb_viewer/vtk_protocol.py b/src/opengeodeweb_viewer/vtk_protocol.py
index 2ec6ed0..fc16e30 100644
--- a/src/opengeodeweb_viewer/vtk_protocol.py
+++ b/src/opengeodeweb_viewer/vtk_protocol.py
@@ -9,11 +9,14 @@
 from vtkmodules.vtkIOXML import (
     vtkXMLReader,
 )
+from vtkmodules.vtkWebCore import vtkWebApplication
 from vtkmodules.vtkCommonExecutionModel import vtkAlgorithm
 from vtkmodules.vtkRenderingCore import (
     vtkActor,
     vtkMapper,
     vtkRenderer,
+    vtkRenderWindow,
+    vtkCompositePolyDataMapper,
 )
 from vtkmodules.vtkRenderingAnnotation import vtkCubeAxesActor, vtkAxesActor
 from vtkmodules.vtkInteractionWidgets import vtkOrientationMarkerWidget
@@ -34,7 +37,18 @@ class vtkData:
     )
 
 
-class VtkView(vtk_protocols.vtkWebProtocol):
+class VtkTypingMixin:
+    def getView(self, view_id: str) -> vtkRenderWindow:
+        return cast(vtkRenderWindow, super().getView(view_id))  # type: ignore
+
+    def registerVtkWebProtocol(self, protocol: Any) -> None:
+        super().registerVtkWebProtocol(protocol)  # type: ignore
+
+    def getApplication(self) -> vtkWebApplication:
+        return cast(vtkWebApplication, super().getApplication())  # type: ignore
+
+
+class VtkView(VtkTypingMixin, vtk_protocols.vtkWebProtocol):
     def __init__(self) -> None:
         super().__init__()
         self.DATA_FOLDER_PATH = os.getenv("DATA_FOLDER_PATH", ".")
diff --git a/src/opengeodeweb_viewer/vtkw_server.py b/src/opengeodeweb_viewer/vtkw_server.py
index c75ec52..12d0765 100644
--- a/src/opengeodeweb_viewer/vtkw_server.py
+++ b/src/opengeodeweb_viewer/vtkw_server.py
@@ -1,18 +1,20 @@
 # Standard library imports
 import argparse
 import os
+from typing import Any, cast, Protocol, runtime_checkable
 
 # Third party imports
-from vtkmodules.web import wslink as vtk_wslink
+from vtkmodules.web.wslink import ServerProtocol
 from vtkmodules.web import protocols as vtk_protocols
 from wslink import server  # type: ignore
+from vtkmodules.vtkWebCore import vtkWebApplication
 from vtkmodules.vtkRenderingCore import vtkRenderer, vtkRenderWindow
 from vtkmodules.vtkCommonCore import vtkFileOutputWindow, vtkOutputWindow
 from opengeodeweb_microservice.database import connection
 
 # Local application imports
 from .config import *
-from .vtk_protocol import VtkView
+from .vtk_protocol import VtkView, VtkTypingMixin
 from .rpc.viewer.viewer_protocols import VtkViewerView
 from .rpc.mesh.mesh_protocols import VtkMeshView
 from .rpc.mesh.points.mesh_points_protocols import VtkMeshPointsView
@@ -48,14 +50,14 @@
 # =============================================================================
 
 
-class _Server(vtk_wslink.ServerProtocol):
+class _Server(VtkTypingMixin, ServerProtocol):
     # Defaults
     authKey = "wslink-secret"
     view = None
     debug = False
 
     @staticmethod
-    def add_arguments(parser):
+    def add_arguments(parser: argparse.ArgumentParser) -> None:
         parser.add_argument(
             "--data_folder_path",
             default=os.environ.get("DATA_FOLDER_PATH"),
@@ -63,15 +65,15 @@ def add_arguments(parser):
         )
 
     @staticmethod
-    def configure(args):
+    def configure(args: argparse.Namespace) -> None:
         # Standard args
         _Server.authKey = args.authKey
 
-    def initialize(self):
+    def initialize(self) -> None:
         # Bring used components
         self.registerVtkWebProtocol(vtk_protocols.vtkWebMouseHandler())
         self.registerVtkWebProtocol(vtk_protocols.vtkWebViewPort())
-        publisher = vtk_protocols.vtkWebPublishImageDelivery(decode=False)
+        publisher = vtk_protocols.vtkWebPublishImageDelivery(decode=False)  # type: ignore
         publisher.deltaStaleTimeBeforeRender = 0.1
         self.registerVtkWebProtocol(publisher)
         self.setSharedObject("db", dict())
@@ -87,7 +89,7 @@ def initialize(self):
         self.registerVtkWebProtocol(mesh_protocols)
         self.registerVtkWebProtocol(VtkMeshPointsView())
         self.registerVtkWebProtocol(VtkMeshEdgesView())
-        self.registerVtkWebProtocol(VtkMeshCellsView())  # type: ignore
+        self.registerVtkWebProtocol(VtkMeshCellsView())
         self.registerVtkWebProtocol(VtkMeshPolygonsView())
         self.registerVtkWebProtocol(VtkMeshPolyhedraView())
         self.registerVtkWebProtocol(model_protocols)
@@ -126,7 +128,7 @@ def initialize(self):
 # =============================================================================
 
 
-def run_server(Server=_Server):
+def run_server(Server: type[ServerProtocol] = _Server) -> None:
     PYTHON_ENV = os.environ.get("PYTHON_ENV", default="prod").strip().lower()
     if PYTHON_ENV == "prod":
         prod_config()
diff --git a/tests/conftest.py b/tests/conftest.py
index 7d4895b..b4f1373 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -2,21 +2,19 @@
 from pathlib import Path
 from websocket import create_connection, WebSocketTimeoutException
 import json
-from xprocess import ProcessStarter
+from xprocess import ProcessStarter, XProcess
 from vtkmodules.vtkIOImage import vtkImageReader2, vtkPNGReader, vtkJPEGReader
 from vtkmodules.vtkImagingCore import vtkImageDifference
 import os
 import shutil
 import xml.etree.ElementTree as ET
-from typing import Callable, Generator
+from typing import Callable, Generator, Any, cast
 from opengeodeweb_viewer import config
 from opengeodeweb_microservice.database.connection import get_session, init_database
 from opengeodeweb_microservice.database.data import Data
 from opengeodeweb_viewer.rpc.viewer.viewer_protocols import VtkViewerView
 
-type RpcTestParams = list[
-    dict[str, str | int | float | bool | dict[str, int] | list[str]] | int
-] | None
+type RpcTestParams = list[dict[str, Any] | int] | None
 
 
 class ServerMonitor:
@@ -81,15 +79,19 @@ def _reader_for_file(path: str) -> vtkImageReader2:
 
     def images_diff(self, first_image_path: str, second_image_path: str) -> float:
         if ".png" in first_image_path:
-            first_reader = vtkPNGReader()
+            first_reader: vtkImageReader2 = vtkPNGReader()
         elif (".jpg" in first_image_path) or (".jpeg" in first_image_path):
             first_reader = vtkJPEGReader()
+        else:
+            raise Exception(f"Unsupported image format for file: {first_image_path}")
         first_reader.SetFileName(first_image_path)
 
         if ".png" in second_image_path:
-            second_reader = vtkPNGReader()
+            second_reader: vtkImageReader2 = vtkPNGReader()
         elif (".jpg" in second_image_path) or (".jpeg" in second_image_path):
             second_reader = vtkJPEGReader()
+        else:
+            raise Exception(f"Unsupported image format for file: {second_image_path}")
         second_reader.SetFileName(second_image_path)
 
         images_diff = vtkImageDifference()
@@ -175,7 +177,7 @@ class Starter(ProcessStarter):
 
 
 @pytest.fixture
-def server(xprocess: object) -> Generator[ServerMonitor, None, None]:
+def server(xprocess: XProcess) -> Generator[ServerMonitor, None, None]:
     name, Starter, Monitor = HELPER.get_xprocess_args()
     os.environ["PYTHON_ENV"] = "test"
     _, log = xprocess.ensure(name, Starter)
diff --git a/tests/mesh/points/test_mesh_points_protocols.py b/tests/mesh/points/test_mesh_points_protocols.py
index 564950d..8cca6ec 100644
--- a/tests/mesh/points/test_mesh_points_protocols.py
+++ b/tests/mesh/points/test_mesh_points_protocols.py
@@ -1,5 +1,5 @@
 # Standard library imports
-from typing import Callable, cast
+from typing import Callable
 
 # Third party imports
 from opengeodeweb_viewer.rpc.mesh.mesh_protocols import VtkMeshView
@@ -20,7 +20,7 @@ def test_points_visibility(
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["visibility"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["visibility"]["rpc"],
         [{"id": mesh_id, "visibility": True}],
     )
     assert server.compare_image("mesh/points/visibility.jpeg") == True
@@ -34,7 +34,7 @@ def test_points_size(
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["size"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["size"]["rpc"],
         [{"id": mesh_id, "size": 15}],
     )
     assert server.compare_image("mesh/points/size.jpeg") == True
@@ -48,7 +48,7 @@ def test_points_color(
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["color"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["color"]["rpc"],
         [{"id": mesh_id, "color": {"r": 255, "g": 0, "b": 0}}],
     )
     assert server.compare_image("mesh/points/color.jpeg") == True
@@ -61,29 +61,28 @@ def test_points_with_point_set(
 
     dataset_factory(id=mesh_id, viewable_file="points.vtp")
     server.call(
-        VtkMeshView.mesh_prefix
-        + cast(str, VtkMeshView.mesh_schemas_dict["register"]["rpc"]),
+        VtkMeshView.mesh_prefix + VtkMeshView.mesh_schemas_dict["register"]["rpc"],
         [{"id": mesh_id}],
     )
     assert server.compare_image("mesh/points/register_point_set.jpeg") == True
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["size"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["size"]["rpc"],
         [{"id": mesh_id, "size": 10}],
     )
     assert server.compare_image("mesh/points/point_set_size.jpeg") == True
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["color"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["color"]["rpc"],
         [{"id": mesh_id, "color": {"r": 255, "g": 0, "b": 0}}],
     )
     assert server.compare_image("mesh/points/point_set_color.jpeg") == True
 
     server.call(
         VtkMeshPointsView.mesh_points_prefix
-        + cast(str, VtkMeshPointsView.mesh_points_schemas_dict["visibility"]["rpc"]),
+        + VtkMeshPointsView.mesh_points_schemas_dict["visibility"]["rpc"],
         [{"id": mesh_id, "visibility": False}],
     )
     assert server.compare_image("mesh/points/point_set_visibility.jpeg") == True
diff --git a/tests/py.typed b/tests/py.typed
deleted file mode 100644
index b648ac9..0000000
--- a/tests/py.typed
+++ /dev/null
@@ -1 +0,0 @@
-partial