Error while setting server report parameters. Error message: The DefaultValue expression for the report parameter ‘AX_CompanyName’ contains an error: Input string was not in a correct format. (rsRuntimeErrorInExpression)

We are getting this error when we run any report from any AOS server. We started getting this error after pasting some barcode fonts to SSRS server. Before that, reports were working fine. We removed all the fonts, but still getting this error. Any suggestions will be much appreciated. Thanks!