Internal server error when printing non jasper report print template

[zzyzz02]

RPC_ERROR Arbitrary Uncaught Python Exception

500 Internal Server Error The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.

I've got error when trying to print report that not created with jasper report.

[ghost]

I'm also getting this error but in reports that are jasper_reports