Status Checks error

Just ran and did the update to MIAB 0.45 and I am unable to get the Status Checks page to load (“Something went wrong, Sorry”).

When I try to run the status checks via CLI, I’m getting an error that dateutil doesn’t exist as a module:

box:~/mailinabox/management# python3.6 
Traceback (most recent call last):
  File "", line 10, in <module>
    import dateutil.parser,
ModuleNotFoundError: No module named 'dateutil'

I tried reinstalling dateutil, but it says it’s already there.