Client error: POST https://preprod.signicat.com/oidc/token resulted in a 400 Bad Request response: {"error":"invalid_request","error_description":"Your client is configured to authenticate using CLIENT_SECRET_BASIC"}

[Relaxe111]

Then I try do get token from oidc server i Get this error:

Client error: POST https://preprod.signicat.com/oidc/token resulted in a 400 Bad Request response: {"error":"invalid_request","error_description":"Your client is configured to authenticate using CLIENT_SECRET_BASIC"}

I debugget and find out that some how i need to set a parameter "auth" in order to switch to authorization: Basic.
Anyone now how to change this authentication from Client_secret_basic to basic? thankyou in advance