display post tags on single.php inside loop

You’re getting Array because that’s exactly what wp_get_post_tags returns; an array (and when you try and echo one in PHP it’ll simply output Array).

As @Chip Bennet suggested, use the_tags() instead, which outputs an HTML string.

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