addRemoteJS api not working in crossrider extension in firefox due to content security policy

In my crossrider extension I am adding remote JS on gmail page using following api.

appAPI.dom.addRemoteJS({
    url: "https://myserver.com/JS/myJs.min.js",
    additionalAttributes: {charset: "UTF-8"},
    callback: function(ref) {

}

This was a working extension code. Due to gmail's content security policy , code has stopped working and giving following message in firefox: Content Security Policy: The page's settings blocked the loading of a resource at https://myserver.com/JS/myJs.min.js (script-src )

Is there any workaround to load js from remote url.

Looks like a CSP protection issue. You can try working around the issue by injecting the script instead, e.g.

appAPI.request.get({
  url: 'https://myserver.com/JS/myJs.min.js';,
  onSuccess: function(result) {
    var s = document.createElement('SCRIPT');
    s.type = 'text/javascript';
    s.charset = 'UTF-8';
    s.text = result;
    document.head.appendChild(s);
  }
});

[Disclosure: I am a Crossrider employee]