Hi Guys, Sending contacts to Plusthis with an HTTP post seems to be running into an ERROR 500. And I don’t know what to do about it. I’ve checked integrations on PlusThis’ end. They couldn’t find a problem. It was definitely coming from Keap. I rewrote the whole campaign in a new one and made a whole new tool as well in PlusThis. But I’m still getting this error: Couldn't find the record with primary key 1 in User.
What could cause this, because i want to fix it 
Kind regards!