Mautic 4.4.4 breaking all of a sudden on s/login

Your software
My Mautic version is: 4.4.4
My PHP version is: 7.4
My Database type and version is:

Your problem
My problem is:
Out of the blue, each time we try to login to a specific version of Mautic it is breaking on s/login_check. If after login in you go to s/dashboard or anywhere else it works fine
These errors are showing in the log:
Only showing a 500 in the log and this is what I am getting in the console:
Uncaught TypeError: Cannot read properties of null (reading ‘style’)
at window.onload (myscript.js:2:50)

Steps I have tried to fix the problem:
chown www-data:www-data on the entire mautic directory
deleting cache
rebooting server

setup debug flag to true in app/config/local.php clear the cache and trigger error again.

Hopefully you get more info in logs.

According to the error shown in the log, the problem is in the “myscript.js” file that you have on your Mautic.

Try learning more through the “Inspect” option in your browser.

I don’t think the web server log (Apache or Nginx) has any relevant information, but it’s good to check too.

Thanks all, it turned out that my hard disk with the db server was full. This sorted the issue