Cannot dequeue script in child theme

Try increasing the priority of the respective action, otherwise the system will not know what to dequeue:

function remove_parentstickyfunctions() {
    wp_dequeue_script('karuna-functions');
}
add_action('wp_enqueue_scripts','remove_parentstickyfunctions', 20);

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