I have been seeing this "ERROR" for a long time, in this case we will call it that, and it echoed all the things I thought you could solve.
1- Clear Cookies and Cache.
2- Restart PC
3- Sign in.
4- Close all, delete history completely.
5- Go to a control panel, check and restart.
I tried all the ways and it keeps coming out.
- When I have days, the powers work perfectly for me, but when the power ends, TYPES still work for me.
I managed to get an application to make gif.
I really don't know if it's the HTML5 version "ERROR".