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I have multiple

I have multiple languages on 1 domain, so example.com/us/ for english. Only this subdomain, with same plugins and settings gives a 502 bad gateway error.

How to debug? To be sure i have deactivated all plugins, no difference..

    Nahid Ferdous Mohit

    Hi karsten missot !
    Hope you are having a great day!

    You can debug the issue can you enable WP_DEBUG in your wp-config.php file and tell me if there are any errors displayed?

    To output the WordPress debugging information you can open your wp-config.php file and change:

    define('WP_DEBUG', false);

    To:

    define('WP_DEBUG', true);

    You can also have these errors output to a debug.log file located in your /wp-content/ folder, to do this add the following to your wp-config.php file:

    define('WP_DEBUG_LOG', true);

    Using WP_DEBUG would put the errors on the site, you can hide those and just have them out put the WP_DEBUG_LOG (if set to true) by using this as well:

    define('WP_DEBUG_DISPLAY', false);

    Moreover, can you please provide the links to your site and if possible, can you please provide me Staff Access so that I can dig more into the matter? To enable access, you can follow this handy manual. https://premium.wpmudev.org/manuals/wpmu-dev-dashboard-enabling-staff-login/

    I'll be looking forward to your response.

    Thanks!

    Cheers ,
    Nahid.