Am using Adaptable 2.2.2 and Moodle 3.8.1
A number of the icons are just open squares; E.g. Drag and drop the topic, pencil for changing the topic title.
I had thought this was general Moodle problem, as had tried a couple of other themes, but have just tried Non Zero and I don't have this error.
Please advise. I am not a coding expert but can make/add changes etc to site administration area.