Yeah, that doesn’t really tell me much either. But the key piece of information there is:
because its MIME type (‘text/html’) is not executable, and strict MIME type checking is enabled.
Therefore, I have 2 guesses for the cause:
- You recently amended an Apache Configuration file
- You recently went into Production Mode
If the latter is true, try to regenerate your static content. Ideally, you should always run this after compiling:
bin/magento setup:static-content:deploy en_US sv_SE -f
Note: sv_SE assumes you’re still using that language
If that fails, you may have to manually clear your static files first:
rm -rf pub/static/*
rm -rf var
bin/magento setup:static-content:deploy en_US sv_SE -f
Note: Run all commands above as “magento” user from within the Magento root directory.