Fatal error: Uncaught Error – no plugins, Php 7.4 or more recent

  • edoardofrezet

    (@edoardofrezet)


    2 years ago

    Dear all, the website currently works on PHP7.3.
    When I try to update to 7.4, or 8.0. or 8.1, the website is down (http error500) with the following message:

    Fatal error: Uncaught Error: Call to undefined function trailingslashit() in /home/ww23xa7a/public_html/wp-includes/class-wp-textdomain-registry.php:103 Stack trace: #0 /home/ww23xa7a/public_html/wp-includes/l10n.php(784): WP_Textdomain_Registry->set('default', 'it_IT', '/home/ww23xa7a/...') #1 /home/ww23xa7a/public_html/wp-includes/load.php(1401): load_textdomain('default', '/home/ww23xa7a/...', 'it_IT') #2 /home/ww23xa7a/public_html/wp-includes/load.php(162): wp_load_translations_early() #3 /home/ww23xa7a/public_html/wp-settings.php(37): wp_check_php_mysql_versions() #4 /home/ww23xa7a/public_html/wp-config.php(77): require_once('/home/ww23xa7a/...') #5 /home/ww23xa7a/public_html/wp-load.php(50): require_once('/home/ww23xa7a/...') #6 /home/ww23xa7a/public_html/wp-blog-header.php(13): require_once('/home/ww23xa7a/...') #7 /home/ww23xa7a/public_html/index.php(17): require('/home/ww23xa7a/...') #8 {main} thrown in /home/ww23xa7a/public_html/wp-includes/class-wp-textdomain-registry.php on line 103

    > I tried to disable all plugins and update php, but the outcome is the same – site down.
    What can I do to solve this problem and correctly update the PHP version? I did not found any solution in the previous topics, in which this error was linked to plugin issues.
    Thanks in advance.

    The page I need help with: [log in to see the link]

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