Description

This MR goal is to inform users when their editors fail due one of these conditions:

• the config points to a non existent file
• the config fails to be parsed
• the src points to a non existent file

Changes

• wraps around try/catch all the cases where users defined files are relevant
• use the error notifier to show errors on the page right away
• test manually everything is actually fine

Checklist

• All tests pass locally
• I have updated CHANGELOG.md
• I have created documentation for this(if applicable)