Sorry, forgot the last line: After $ sudo apt install snap --reinstall chromium did work again. I didn't have to reinstall the snap apps; contrary to what was written in the web page that Google had found for me.
Sorry, forgot the last line: After $ sudo apt install snap --reinstall chromium did work again. I didn't have to reinstall the snap apps; contrary to what was written in the web page that Google had found for me.