Error: 500: Internal Server Error

Hello, I have your plugin and PRO plugin installed on a multisite and all of a sudden a couple days ago it’s been throwing an Error: 500: Internal Server error. The feed is connected on two sites in a multisite setup.

• The accounts are showing as still connected.
• We have disconnected and reconnected them just in case.
• I’ve deactivated all other plugins to test for conflicts.
• I’ve uninstalled and reinstalled the core plugin and the pro version.
• I’ve re-added my license key
• The plugin seems to be working on all the other sites connected with my license key that I have it setup on, but they are not multisites.
• I have updated all software to ensure that wasn’t the issue either, no difference.
• I have cleared all caches.

Could this issue be related to the multisite? I can’t find a reason why it just suddenly stopped working in the past few days? Any other ideas why it’s not working?

The two sites are:
https://ianwhitemanagement.com/
and https://iwmnextgen.com/

You can see the broken feeds on the homepage of both sites. Please advise?