After updating I get the following when I check the config:
Check and restart
A basic validation of the configuration is automatically done before restarting. The basic validation ensures the YAML configuration doesn’t have errors which will prevent Home Assistant or any integration from starting. It’s also possible to only do the basic validation check without restarting.
It appears to be either an automation, script or template triggered sensor. Start by commenting out the above entries until you narrow it down. You can also run the checker from the cli. ha core check It may give you more information.
Also check the logs for a failed automation/script/template trigger entry.
Thank you for all the help!!! I found a few Automations that showed no errors but instead of conditions they said condition and gave no errors, but that seems to have fixed it!!
Just to add to this: I had changed so much automations in one session throughout 12k lines of code, that I had to resort to a more radical approach - cutting all code in automations.yaml in half, checking the config, and repeatedly halving sections until I found the automation or lines causing the issue and the config check finally passed without errors.