failed to compile: fluxcomp.py: not found

[SkyNetCoder]

user@UniversalTerminal:/home/user/projects/DirectFB2$ sudo meson setup build/
The Meson build system
Version: 1.9.1
Source dir: /home/user/projects/DirectFB2
Build dir: /home/user/projects/DirectFB2/build
Build type: native build
Project name: DirectFB2
Project version: 2.0.0
C compiler for the host machine: cc (gcc 7.5.0 "cc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0")
C linker for the host machine: cc ld.bfd 2.30
Host machine cpu family: aarch64
Host machine cpu: aarch64
Checking for size of "long" : 8
Configuring config.h using configuration
Configuring directfb_version.h using configuration
Configuring directfb_build.h using configuration
Configuring build.h using configuration
Library dl found: YES
Checking for function "clock_gettime" : YES
Run-time dependency threads found: YES
Found pkg-config: YES (/usr/bin/pkg-config) 0.29.1
Configuring build.h using configuration
Program fluxcomp.py found: YES (/home/user/projects/DirectFB2/src/core/fluxcomp.py)
Configuring build.h using configuration
Run-time dependency libdrm found: YES 2.4.101
Has header "linux/fb.h" : YES
Has header "linux/input.h" : YES
Build targets in project: 29
NOTICE: Future-deprecated features used:

• 1.1.0: {'"integer option" keyword argument "value" of type str'}

Found ninja-1.8.2 at /usr/bin/ninja

user@UniversalTerminal:/home/user/projects/DirectFB2$ sudo meson compile -C build/
INFO: autodetecting backend as ninja
INFO: calculating backend command to run: /usr/bin/ninja -C /home/user/projects/DirectFB2/build
ninja: Entering directory `/home/user/projects/DirectFB2/build'
[41/188] Generating src/core/CoreDFB with a custom command
FAILED: src/core/CoreDFB.c src/core/CoreDFB.h
/home/user/projects/DirectFB2/src/core/fluxcomp.py --call-mode --dispatch-error-abort --identity --include-prefix=core --object-ptrs --static-args-bytes=FLUXED_ARGS_BYTES -c ../src/core/CoreDFB.flux -o=src/core
/bin/sh: 1: /home/user/projects/DirectFB2/src/core/fluxcomp.py: not found
[46/188] Compiling C object lib/fusion/libfusion-2.0.so.0.0.0.p/shm_fake.c.o
ninja: build stopped: subcommand failed.