I have a clean Joomla 3.8.2 and the newest fabrik. I use this as a testsite and as I said, the original template Protostar, so there are NO 3rd party stuff on my site. I published the fblike now, and I got several errors, one asking for a file fbline.min.js.
The requested URL /plugins/fabrik_element/fblike/fblike-min.js was not found on this server.
I just installed the plugin as is, so why is the page asking for this file? And yes, it is not there.
The second error in my browser (chrome) I reckon is because of the missing js file...I don't know.
Uncaught Error: Script error for: element/fblike/fblike-min
http://requirejs.org/docs/errors.html#scripterror
at C (eval at <anonymous> (jquery.min.js:2), <anonymous>:8:252)
at HTMLScriptElement.onScriptError (eval at <anonymous> (jquery.min.js:2), <anonymous>:29:514)
So I don't think it's a 3rd party problem...
I have an updated server config with PHP 7 and my website has SSL and https.