After updating to the newer version of WordPress, I was unable to log in as an admin. This page helped: https://wordpress.org/support/article/debugging-in-wordpress/ to.
Here are my steps to fix the broken
- Turn on debug mode in wp-config.php (in the directory of your WordPress site, would need access to the file on the hosting site)
- Go the problematic page
- View the error lines and find offending wp plugins
- Remove those wp plugins
- Ensure no error logs
- Turn off debug mode in wp-config.php
<?php ... // ** MySQL settings ** // define( 'WP_DEBUG', false ); define( 'WP_DEBUG_LOG', false ); ... ?>