Our WordPress site has developed a 301 redirect loop error when web-server caching is enabled. With server caching disabled and caching plugin installed and active the issue doesn't occur, but the page loading is slower.
Our developer says the logs show no error(s). Can anyone please assist in diagnostic steps to identify the source of the issue and how to fix.
Site is running:
- PHP version:7.0.32-3+ubuntu18.04.1+deb.sury.org+1
- MySQL version:5.5.5-10.1.36-MariaDB-1~bionic