Unexpected error happened

This is the rescue page. See the exception details below

NullReferenceException

Message:
Object reference not set to an instance of an object.

StackTrace:
   at Offshoot.SAManager.Web.Controllers.ReportController.get_codes() in C:\Proyectos.Net\Offshoot\SearchAxis\SAManager\src\Web\Controllers\ReportController.cs:line 28
   at Offshoot.SAManager.Web.Controllers.ReportController.ReportLayoutIndex() in C:\Proyectos.Net\Offshoot\SearchAxis\SAManager\src\Web\Controllers\ReportController.cs:line 41