After updating the Gallery, SMF to 2.018 and put PHP version on 7.4 I see an error in the log. Strange thing is that I don't use the ad seller module. In the past I did... so maybe it is not completely removed? It looks like it is only creating the error when browsing the SMF Gallery..
https://xxxxxxx/index.php?action=gallery;sa=view;id=29572
8: Trying to access array offset on value of type null
File: /home/digiscrap/domains/digiscrap.nl/public_html/Sources/adseller2.php
Line: 2409
Thanks!
Vincent