The message "Commons-android-strings-about rate us" is empty:
https://translatewiki.net/w/i.php?title=Special:Translations&message=Wikimedia%3ACommons-android-strings-about+rate+us%2Fhe
It should probably deleted, fixed, or ignored.
See also upstream issue: https://github.com/commons-app/apps-android-commons/issues/1333