I wanted to join in on this thread. We’ve been experiencing this on and off over the last few months as well. It seems to happen once a month or so and Hubspot will reset itself and ask to be re-authenticated. During the period of time until somebody sees the message in wp-admin, frontend visitors are thrown 500 errors.
We do not have the any other Hubspot plugins installed.
I’ve enabled GF_HUBSPOT_DEBUG so we’ll see what happens next time there is an issue.
Just wanted to put it out there as it may be an ongoing problem that needs a resolution…I’ll update this thread if I get any more info.
Figured it out, had to change the global tags plugin to be executed later (after the custom post template had been executed). fixed the issue.