The site is experiencing technical difficulties

Hello,
I was trying to set up AdSense and installing the plugin Site Kit, but this didn’t work and it said: Update failed. I then tried to update WordPress as there was an update available. It went to maintenance mode for a while, then it said:
“The site is experiencing technical difficulties”
I looked this up, and enabled WP-DEBUG, and this was the error:

Notice: Undefined variable: minnitOptions in /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-content/plugins/minnit-chat/minnitchat.php on line 41

Notice: wp_localize_script was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or login_enqueue_scripts hooks. Please see Debugging in WordPress for more information. (This message was added in version 3.3.0.) in /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/functions.php on line 4778

Fatal error: Uncaught ArgumentCountError: Too few arguments to function WP_Scripts::set_translations(), 1 passed in /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/script-loader.php on line 518 and at least 2 expected in /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/class.wp-scripts.php:496 Stack trace: #0 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/script-loader.php(518): WP_Scripts->set_translations('wp-api-fetch') #1 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/script-loader.php(789): wp_default_packages_scripts(Object(WP_Scripts)) #2 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/class-wp-hook.php(286): wp_default_packages(Object(WP_Scripts)) #3 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #4 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/plugin.php(515): WP_Hook->do_action(Array) #5 /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/class.wp-scripts.php(148): do_action_ref_array('wp_d in /home/vol5_8/epizy.com/epiz_24724758/htdocs/wp-includes/class.wp-scripts.php on line 496

The site is experiencing technical difficulties.

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