New issue came up While uploading file to box.net

[Chitranshabhi]

Hi I am uploading a file using this API. But, below issue is coming up, that refresh token and " The grant type is unauthorized for this client_id" , Can somebody help in this immediately. If possible.

Response:

Box_API Object
(
    [client_id] => 29qpde6m0vgkspf6tfr2sysx9hlrkysb
    [client_secret] => 8ycgbw4gaZbz1yqUP3o4KJSQklgA2Jr2
    [redirect_uri] => http://localhost/test/file_upload1/example.php
    [access_token] => 
    [refresh_token] => B7kPCoU7KkPlMWHjRM1sgI8x8gOuLTU4rwJZgrhVoXujV28caJAisF4FGhgsNo4t
    [authorize_url] => https://www.box.com/api/oauth2/authorize
    [token_url] => https://www.box.com/api/oauth2/token
    [api_url] => https://api.box.com/2.0
    [upload_url] => https://upload.box.com/api/2.0
    [error_message] => The grant type is unauthorized for this client_id
    [response_status] => 
    [asUser] => 


![image](https://user-images.githubusercontent.com/47568751/103513841-6e23da80-4e91-11eb-946d-019da95cbbf0.png) ..

[Chitranshabhi]

Hi I am uploading a file using this API. But, below issue is coming up, that "Access token" is blank and "The grant type is unauthorized for this client_id" showing in "error _message", Can somebody help in this immediately. If possible.

Response:

Box_API Object
(
[client_id] => 29qpde6m0vgkspf6tfr2sysx9hlrkysb
[client_secret] => 8ycgbw4gaZbz1yqUP3o4KJSQklgA2Jr2
[redirect_uri] => http://localhost/test/file_upload1/example.php
[access_token] =>
[refresh_token] => B7kPCoU7KkPlMWHjRM1sgI8x8gOuLTU4rwJZgrhVoXujV28caJAisF4FGhgsNo4t
[authorize_url] => https://www.box.com/api/oauth2/authorize
[token_url] => https://www.box.com/api/oauth2/token
[api_url] => https://api.box.com/2.0
[upload_url] => https://upload.box.com/api/2.0
[error_message] => The grant type is unauthorized for this client_id
[response_status] =>
[asUser] =>

.