Custom post tag images not displaying with ACF

As per the ACF documentation, you must pass either the term and term ID or the term object to the get_fields() function for a taxonomy.

So in your case, you would replace $tag_image = get_field('tag_image'); with:

$tag_image = get_field('tag_image', $term);

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