I am getting the following error while trying to add new item to an existing list and also while click on add an aap to create list or library in sharepoint 2013
Server Error in '/' Application.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0016: Could not write to output file 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\74dee58f\5edd977b\App_Web_addanapp.aspx.9c9699a8.aiwcf7tt.dll' -- 'The directory name is invalid. '