Description

When using Debugbar, a ctype_lower(): Argument of type null will be interpreted as string in the future... warning message is being logged.

Checklist

• I have read the CONTRIBUTING guide
• I have added tests that prove my fix is effective or that my feature works
• I have not added tests, the reason is that the fix is simple.
• I have added the necessary documentation (if appropriate)
• I have created a branch (PR from main branch will be closed)
• New and existing unit tests pass locally with my changes
• The PR does not contain multiple unrelated changes