937 server erros

[Alvin63]

Ok so just found 937 server errors on one of my forums today. But not on the other two forums. Nothing to do with emails this time - seems to be everything under the sun. AMS, Templates, maximum user connections resource, Call to undefined method/entity/XF.

Any ideas? My forums are all up to date and have the same addons.
937 server erros

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