Make logo dynamic in wordpress

Theme header logo function get_theme_mod( 'custom_logo' );

$custom_logo_id = get_theme_mod( 'custom_logo' );
$image = wp_get_attachment_image_src( $custom_logo_id , 'full' );
echo '<img class="header_logo" src="'.$image[0].'">';

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