ACF unable to use user field

If you are using ACF then you don’t need to update field manually. Field will be updated when you update the post.

And To retrieve this field use :

get_field( 'video_author', $post_id );

For User field, make sure you have selected Field Type -> User in ACF.

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