disable-wp-textdomain-error.php

<?php
/**
 * Plugin Name: Disable Textdomain Error
 * Description: Prevents triggering errors for the '_load_textdomain_just_in_time' function.
 * Author: Kowsar Hossain
 * Version: 1.0
 * 
 * Note: This is a Must-Use (MU) plugin. Place this file in the 'wp-content/mu-plugins' directory.
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly.
}

add_filter( 'doing_it_wrong_trigger_error', function( $status, $function_name ) {
    if ( '_load_textdomain_just_in_time' === $function_name ) {
        return false;
    }
    return $status;
}, 10, 2 );

It works fine, thanks

Works perfectly, Thank you very much

thank, it works

Thanks for this, very helpful in the meantime for me (whatever "meantime" turns out to mean).

WordPress also released steps to perform backtrace to find root cause of the issue https://make.wordpress.org/core/2024/10/21/i18n-improvements-6-7/