Begin of the insertion**Preconditions**

- Calendar module is activated.

**Steps to reproduce**

1. VisitEnd of the insertion Begin of the deletion When I visitEnd of the deletion the issue show page of an Begin of the insertionwork packageEnd of the insertion Begin of the deletion issue,End of the deletion which does not exist Begin of the insertion(e.g. /work\_packages/10000000)

**Actual behavior**

- TheEnd of the insertion Begin of the deletion (/issues/10000000), I get theEnd of the deletion following error description Begin of the insertion
End of the insertion Begin of the deletion

End of the deletion 

Begin of the insertion**Expected behavior**

- Correct translation from “The page you were trying to access doesn’t exist or has been removed.” OrEnd of the insertion Begin of the deletion It tells me, thatEnd of the deletion it Begin of the deletion cannot find an attachment. Instead itEnd of the deletion should tell me that it cannot find an issue. Begin of the insertion

**QA system**

- Core version: 3.0.0pre39End of the insertion