Hello everyone,
I’m new here so first of all I want to say hello. I don’t know where else to turn, so I’m creating this post. The problem is that I can’t update or install plugins. An error message appears after starting the update process and nothing happens. “The update process has been started. It may take a while on some servers, so please be patient. Enabling maintenance mode… -1” – after a while the page crashes and an error is displayed error
Fatal error: Uncaught Error: Call to undefined function trailingslashit() in /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-includes/class-wp-textdomain-registry.php:103 Stack trace: #0 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-includes/l10n.php(784): WP_Textdomain_Registry->set() #1 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-includes/load.php(1401): load_textdomain() #2 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-includes/load.php(278): wp_load_translations_early() #3 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-settings.php(74): wp_maintenance() #4 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-config.php(81): require_once(‘…’) #5 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-load.php(50): require_once(‘…’) #6 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-admin/admin.php(34): require_once(‘…’) #7 /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-admin/update-core.php(10): require_once(‘…’) #8 {main} thrown in /home/platne/serwer173924/public_html/autoinstalator/insecret.pl/wordpress9026/wp-includes/class-wp-textdomain-registry.php on line 103
I should also mention that my hosting provider is unable to solve the problem – they’ve been telling me to wait for the WP update to 6.1.2 for a week now. I also tried to fix the critical file myself by modifying the code – I found some suggestions on GITHUB.
The page I need help with: [log in to see the link]