After some troubleshooting, including enabling and disabling various plugins, I have determined that the problem arises from a conflict between the Content control plugin (v. 2.3.0) and the Polylang plugin. When Polylang is active, the site fails to load, but when it is deactivated, the site works correctly.
I am encountering the following error message (though the specific error text may vary):
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 262144 bytes) in /www/site.com/wp-includes/taxonomy.php on line 3743
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 262144 bytes) in Unknown on line 0
Additionally, when saving a post as a draft (Save Draft) and then attempting to preview it, I encounter the following errors (though the specific error text may vary and it does not depend on the version of the plugin (test v. 2.2.7; 2.2.8):
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 262144 bytes) in /www/site.com/wp-content/plugins/polylang/include/translatable-object-with-types-trait.php on line 61
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 262144 bytes) in Unknown on line 0
Could you please help me determine if this conflict is specific to my setup, or if it is a known issue that others are experiencing as well?