Why does wc_get_products($arg) return no products when $arg = ‘average_rating’ => 5.0

Why does wc_get_products($arg) return no products when $arg = ‘average_rating’ => 5.0

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