Avira Rescue JS error

Hello,

When starting a scan I get this error message:

TypeError: Cannot read property 'split' of undefined at file:///opt/avira/rescue_system/ui/resources/app/assets/js/-renderer.js:1372:43

The error window repeats and I have to force shut down Avira Rescue System.

Any ideas how to fix this, please?

Thank you,

David