I deactive polylang mistakenly now getting error

Your child theme is using a function that is not in the child theme. It should check if it exists first before using it. Or just reactivate the plugin.

@joyously My website is not working how i reactive it, and if i removed from directory and again install it will i lose my itlaian vrsion?

I don’t know how that plugin works, but I doubt that deactivating it will lose any data. (don’t know though)
You should fix your child theme. That is where the error is. No code should use a plugin’s function without checking first if it exists.
if function_exists('pll_register_string')

I only see this on function.php what i do with that should i remove it?
add_action(‘wp_head’,’simplebooking_scripts’);
add_action(‘init’, function() {
global $wp;
pll_register_string(‘bellevuex-child’, ‘Official Website’);
pll_register_string(‘bellevuex-child’, ‘Chat With Us’);
});

oh thankyou i removed it and now it is workng <3

But now i can see another error ;(

Thankyou problem solved by removing it ??