WebAPI Authentication Failed

Dear Team,

Am getting the following error message while calling a Endpoint from browser, only in one environment we are facing this issue and rest all working fine. Any advise would be helpful.

{"resource":"\/suite\/webapi\/invalidWMUrl","error":"APNX-1-4187-000","message":"Authentication failed. Please check your credentials and try again.","title":"An Error Has Occurred"}

Thanks,

Sunil