cortex command error
 

Ansys.Fluent.Cortex.CortexCommandFailedException: An error occured in FLUENT while applying case and settings informatins.
An error occured in FLUENT while applying case and settings informatins.
at Ansys.Fluent.Cortex.CortexCommunicator.SendMessage (String msg, String msgKey, String errorMessage, Boolean waitForReply)
at Ansys.Fluent.FluentCommunicator.UpdateSetupInfo(Di ctionary`2 info)
at Ansys.Fluent.Data.SetupData.ReadCaseModelInfo(IFul lContext context) andError reading "C:\Users\hcl\AppData\Local\Temp\WB_DESKTOP-2HAEA13_hcl_9096_2\unsaved_project_files\dp0\FFF\M ECH\FFF.msh". that's theerror occur in using ansys fluent we made a simple hollow cylindrical geometry and after meshup if we proceed the setup than this error is found .How we rectify this error