Plugin not working locally, but works on server

And this is why I post to stackexchange. I worked on this for a month, then as soon as I posted the question I found a resolution (Thanks to Milo as well that confirmed my suspicions).

The solution was that the script the freelancer had done was trying to call the full URL, and on a localhost it tried to grab the file url.

the solution was to replace all instances of ‘DIRURL’ or “DIRURLL” in my script with the relative path to the plugin files. Using notepad++ I just did a “find in files” search, located the perpetrators, and then replaced all with the relative path — the plugin instantly started working (after refresh of course).

Thanks guys.