Could not load file or assembly 'Microsoft.ReportingServices.ProcessingObjectModel

I have a custom authentication in the reporting services,

And i'm getting this error whenever trying to open a report :

An internal error has occurred on the report server. For more information, see the error log. (rsInternalError)
Could not load file or assembly 'Microsoft.ReportingServices.ProcessingObjectModel, Version = 2019.11.0.0, Culture = neutral,
PublicKeyToken = 89845dcd8080cc91' or one of its dependencies. 
An API call was terminated abnormally. (Exception from HRESULT: 0x800300FA (STG_E_ABNORMALAPIEXIT))

Any help? and thanks