/wp-admin/admin-ajax.php Error 500

Isn’t it the case that once you write up what you’ve tried, you find that one last thing to try that works?

I just discovered that my admin-ajax file had 000 permissions. I reset to 644 and everything started working properly again.

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)