Why does wp_remove_object_terms not work?

I know this is old but I ran across this issue, adding true to the end of the hook resolved the issue. In this instance wp_remove_object_terms($postID, 'remove_this_term', 'custom_taxonomy', true); will run the hook.

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