Missing object error handling

[TheReverendB]

What Alias/Snippet is this for?

map.alias

Summary

Attempting to remove an object using the wrong coordinates currently errors, this should prevent that error and display an "Object not found" message.

Checklist

PR Type

• [ ] This PR is a code change that implements a feature request.
• [x] This PR fixes an issue.
• [x] This PR adds a new feature that is not an open feature request.
• [ ] This PR is not a code change (e.g. documentation, README, ...)

  Other

• [ ] This PR is a breaking change (e.g. methods or parameters removed/renamed)
• [ ] If code changes were made then they have been tested.
• [ ] I have updated the documentation to reflect the changes.
• [ ] I properly commented my code where appropriate