Error on Saving Campaign

Hi, I’ve only just discovered Mautic, in theory it seems amazing. I’m trying to test a campaign but it freezes when trying to exit and save from the campaign builder. Can anyone advise on this?

Your software
My Mautic version is: 2.16.2
My PHP version is: PHP Version 7.0.33

Your problem

Exit and save of the campaign builder freezes.

These errors are showing in the log:

Steps I have tried to fix the problem:
I’ve tried multiple ways of adding the campaign. Using different actions etc…