Several errors related to design properties after Mendix 8 migration

Hi all,   I just updated to Mendix 8.3.0,  coming from 7.23.5. This included updating Atlas UI Resources. After the update, I get over 40 error related to design properties as show below. I can’t find any info on how to solve such errors. I did find how to prevent these errors when migrating, see section 3.2 on this page   Any ideas on how to get the errors out? I already tried going back to Atlas UI Resources v1.2.4 and again to newest version, but this didn’t do anything.   Thanks!   Paul      
1 answers

What is in your settings.json file? Or is the file missing?