Disable Chrome strict MIME type checking

The server should respond with the correct MIME Type for JSONP application/javascript and your request should tell jQuery you are loading JSONP dataType: 'jsonp'

Please see this answer for further details !You can also have a look a this one as it explains why loading .js file with text/plain won't work.

In my case, I turned off X-Content-Type-Options on nginx then works fine. But make sure this declines your security level a little. Would be a temporally fix.

# Not workadd_header X-Content-Type-Options nosniff;# OK (comment out)#add_header X-Content-Type-Options nosniff;

It'll be the same for apache.

<IfModule mod_headers.c>  #Header set X-Content-Type-Options nosniff</IfModule>

For Windows Users :

If this issue occurs on your self hosted server (eg: your custom CDN) and the browser (Chrome) says something like ... ('text/plain') is not executable ... when trying to load your javascript file ...

Here is what you need to do :

1. Open the Registry Editor i.e Win + R > regedit
2. Head over to HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.js
3. Check to if the Content Type is application/javascript or not
4. If not, then change it to application/javascript and try again