Even if it’s only this one parameter it can’t find (is this the case?) it’s really totally irrelevant. The log viewer is simply doing a lookup of the database - it’s not linked in any way at all to any sort of issue with PaperUI.
This is very easily explained.
The current value is 256 (this is correct from the log you provided). The database only allows a value of 0 to 1. 256 is outside of the range 0 to 1, so PaperUI marks it red and doesn’t allow you to save.
See this link for more information -:
No, as above - it’s completely unlinked and unrelated…