Good day all together!

I have an issue with the multifield/location filter:
When choosing a country/state (1st level), the filter works fine.
When choosing a region (2nd level), the filter sometimes produces errors, depending on the region or language chosen.
For example... a region chosen in german delivers an error, while the same region chosen in english is working.

Does anyone have an idea, what could be the reason for this?

1st_level-working.jpg
2nd_level_working.jpg
2nd_level_error.jpg

Thanks in advance!