Creating email times out

Your software
My Mautic version is: -it is telling me that 2.15.3 is available - but I still can’t find the actual version.
My PHP version is: 7.03.33

Your problem
My problem is: creating new emails hang. The apply button just keeps circling. It has been going for 15 minutes at one stage today.

These errors are showing in the log:

Steps I have tried to fix the problem: I have tried to use different email templates, I have tried deleting and starting over.

Any help you can offer would be greatly appreciated.

The version is in lower right corner.

You probably have to open up the Dev Console in your browser and look for errors (CTRL+SHIFT+C/CTRL+SHIFT+C).

OK - so it says that 2.15.3 is available - but I still can’t find the version it is but I am assuming it is 2.15.2

I am getting similar error in Email Builder. I see only blank page and “Apply” or " Close Builder" buttons just does not do anything:

I am on 2.15.3 fresh install:

As I stated before, open up the Dev Console and either post or screenshot the results.