Summary
After update from 2.6.6 to 2.7.1 or 2.7.2 I get the site unavailable error
Step to reproduce
backup site
copy clean update
put original config file in place
run installer
installer gives no issues
continue install
site unavailable page shows
after login manager shows old version
if i try again the installer same error. Manager now gives the same error
There are around 20 similar project sites that update without any problems, but this one does strange enough
Environment
modx 2.6.6 on a subdomain
Apache
PHP Version 7.2.22
MYSQL 10.1.40-MariaDB-1~stretch
looks similar to this request for help
https://forums.modx.com/thread/104269/upgrade-2-6-4-to-2-6-5-error-503-site-temporarily-unavailable
MODX version tagged when creating the issue, Apache or NGINX with version, MySQL version, browser, etc. Any relevant information.