HTTP ERROR 500 After Migration in WordPress

Question

I recently migrated my staging site into the live site using All in One WP Migration plugin. After migration, I am getting an HTTP Error 500. Here is the error log

Fatal error: Class 'ET_Core_API_Email_Fields' not found in /home/mashbrewing/public_html/wp-content/themes/Divi/includes/builder/module/SignupItem.php on line 105. Can someone please help. :(

Answer 1

I had the same error when migrating a site with an older version of Divi - something like 3.1.1. I didn't get to the bottom of it, but activating a different theme (eg twentyseventeen), updating Divi, and then reactivating Divi fixed it. This is pretty straightforward if you have access to WP CLI.

Otherwise, I'd recommend upgrading Divi prior to starting the migration.