Description

We should notify an error / warning in case of missing files (e.g. prj) describing the problem / defaults we apply.

In case of Bug (otherwise remove this paragraph)

Browser Affected
(use this site: https://www.whatsmybrowser.org/ for non expert users)

• Internet Explorer
• Chrome
• Firefox
• Safari

Browser Version Affected

• Indicate the browser version in which the issue has been found

Steps to reproduce

• A list of steps to reproduce the bug
• ...

Expected Result

• Describe here the expected result

Current Result

• Describe here the current behavior

Other useful information (optional):