Something, I do not know what, is resetting my global error_reporting(E_ALL) level to a higher level, thus hiding the errors. Explicitly adding the lower error_reporting in files in question helps show the error.
WordPress Customizer not loading
WordPress error handling is pretty good, but you do need to do a little work to shape this to your needs: I can tell you that the most simple set-up I know is to log errors to the wp-content/debug.log file – using the following set-up in wp-config.php: define( ‘WP_DEBUG’, true ); define( ‘WP_DEBUG_LOG’, true ); … Read more
Only specific users timing out
Your theme is using taxonomy term metadata that did not become available until Version 4.4 of wordpress. Refer to: https://make.wordpress.org/core/2015/10/23/4-4-taxonomy-roundup/ if you want to read up on this. You need to upgrade your WordPress installation to 4.4 or above (latest is 4.5.1) or modify your theme. https://codex.wordpress.org/Updating_WordPress
You’re missing a semicolon on your add_action.
First, try disabling all of your plugins, and see if that fixes it. If it does, enable them one at a time until you are able to reproduce the error. That should tell you which plugin is causing the problem. Additionally, I strongly suggest you upgrade to 3.0.1.
The issue was not caused by WordPress. It was caused by a plugin. In this particular case, I checked the plugins installed looking for anything that could modify the mail behavior. I disabled the plugin “Email Templates” and started receiving all the messages normally. Then I noted that there was an update available for that … Read more
No. 500 error will return when you have server error. PHP error, etc. See response code reference. The HyperText Transfer Protocol (HTTP) 500 Internal Server Error server error response code indicates that the server encountered an unexpected condition that prevented it from fulfilling the request. This error response is a generic “catch-all” response. Sometimes, server … Read more
I think there is a permission issue with these files Reset the permissions or overwrite it from a fresh install. But be sure that it’s the same version. All files should be 664. All folders should be 775. wp-config.php should be 660.