Debug a WP install: how to find which functions write post updates during a process (a woocommerce checkout in my case)

Debug a WP install: how to find which functions write post updates during a process (a woocommerce checkout in my case)

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