For the past few days, all my HTML/CSS/JS repls have been giving a 'error' icon on the console, but no error message.
It doesn't affect anything. It's just mildly annoying.
2 minute video: https://www.loom.com/share/8857b79f63984fb2be64c960f0782a72
AT 0:00 -- this is my project. Hit run, and the console shows an error, even though it's blank.
AT 1:35 -- Created a fresh new html/css/js repl. Added a single html element, hit run - and I still get the error.
Check the Chrome dev console errors. It might be that there is in fact an error, but the repl console is not showing it. Send a screenshot of what your Chrome dev console looks like when this happens.