To display a better error message

[SayyareHamit]

What happened

When a user deleted a existing process, and kept the duplicate one. Than search the deleted process, the page should display a better error message than display status code 404.

Steps to reproduce

1. Click drop down list on a existing process and than click "Duplicate", then duplicate a process
2. Delete the original process
3. Search the original process, than the page display an error message with status code 404

Expected results

The deleted process page should display a better error message, For example, This page has been deleted.

Actual results

The deleted process page display a message with status code 404

[nesadrian]

We should send an error message from the backend when a users try to access a process that do not exists

[HavardNot]

As there are no suggestions made for the improved error message I implemented a simple statement:

$"Unable to find process with project id: {query.Id}")

[HavardNot]