Hi there, I’ve just had a big fight with Membership 2 which took down the site with a 500 error. I had disabled all plugins but that didn’t stop it. Got the site back up and running without M2 and the error has disappeared for me. I’ve since reinstalled M2 and still good.
So not sure what went on there, whether they were linked somehow but all is good now 🙂
I got this after updating as well but saving the settings didn’t work for me unfortunately.