I’ve seen similar topics here before, but not with a public answer (at least that I’ve noticed.)
I get the error in the subject line when attempting to convert an AVIF image to JPEG (or PNG). I’m using the code almost s…...xaml.cs:line 907 at FNSBArcGISProAddin...pector\PropertyInspectorDoc.xaml.cs:line 652 at System.Threading...