Fix issue "Fingerprint2 is not defined"

[volha-pivavarchyk]

Description:

I’m trytint to set it up.

There are the messages in the browser console:

1. Uncaught ReferenceError: Fingerprint2 is not defined
   at auth.js?v527f6eba:2:1
2. Uncaught TypeError: Cannot set properties of null (setting 'value')
   at gauth.js?v527f6eba:5:43
   at fingerprint2.min.js?v527f6eba:1:1708
   at fingerprint2.min.js?v527f6eba:1:14242

This PR suggests a solution to these issues

Steps for testing:

1. Install the new instance of Mautic
2. Add this plugin
3. Open the browser console
4. There are no errors

[YosuCadilla]

Hello @volha-pivavarchyk
Thanks for sharing your code. I tried first as is and then with your modifications with exactly the same result.

After installing the plugin and scanning the code, I get a new entry for the login in the APP.
Everything seems to work just fine, I get no errors in the Mautic log and no errors in the Apache log.
But...
When I land on the Mautic page I introduce my user and password and I get redirected to the GA form, there I fill the form and I get: "Invalid code. Please try again." That's in a typical Mautic black rectangle message box.

Any idea how can I troubleshoot?

[YosuCadilla]

This is my browser's console output:
DevTools failed to load source map: Could not load content for chrome-extension://lggdbpblkekjjbobadliahffoaobaknh/content.46295713.js.map: System error: net::ERR_BLOCKED_BY_CLIENT
DevTools failed to load source map: Could not load content for chrome-extension://lggdbpblkekjjbobadliahffoaobaknh/content.46295713.js.map: Fetch through target failed: Frame not under control of agent host; Fallback: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
2app.bundle.js:217 user already snoozed alert, do not show again
3app.bundle.js:59 refreshed cache
4app.bundle.js:217 user already snoozed alert, do not show again
DevTools failed to load source map: Could not load content for chrome-extension://lggdbpblkekjjbobadliahffoaobaknh/content.46295713.js.map: Fetch through target failed: Frame not under control of agent host; Fallback: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME
2app.bundle.js:217 user already snoozed alert, do not show again

[YosuCadilla]

I've tested with both Chrome and Firefox, same result.

[YosuCadilla]

[YosuCadilla]

Funny thing, while I cannot get past the code form, not on my computer, not on my phone, not in incognito, not in Firefox, not in Chrome...
Other people have no issue at all login in to the very same Mautic instance, using Google Authenticator.

[volha-pivavarchyk]

@YosuCadilla Thanks for attention for this changes. I may come back to this PR a bit later after finishing some current tasks, discribe our problem, look through your cases and share how it works for us.

[YosuCadilla]

I think the issue I was experiencing was limited to my own user account, everyone else seems to be able to use the plugin.
I suspect it is because my username has a space in it. I will try without the space and see if that fixes the issue.