Error installing GPX plugin

I am trying to get octoprint to work with my Flash forge creator pro and i keep getting an error when trying to install the GPX plugin.

Installing plugin "GPX" from https://markwal.github.io/octoprint-download/OctoPrint-GPX.tar.gz...
Error!
Could not install plugin from https://markwal.github.io/octoprint-download/OctoPrint-GPX.tar.gz, was neither a plugin archive nor a single file plugin

Fixed in the next release, bug in OctoPrint.

Ticket: https://github.com/OctoPrint/OctoPrint/issues/3698

There is a workaround in the plugin's repo here: https://github.com/markwal/OctoPrint-GPX/issues/85#issuecomment-682200814

You just need to change the extension to tgz since there is a bug with detecting tar.gz.