Critical error when accessing “network administrator” in WordPress Multisite
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When I log in to the network administrator dashboard, the following message appears:
There has been a critical error on your website. Please check your site administration email inbox for instructions.
– domain.com/wp-admin/network/ < = critical error
– domain.com/wp-admin/ < = critical errorI activate debugging mode via FTP in the wp-config file and the following errors appear:
————————————————————Fatal error: Uncaught Error: Call to undefined function wp_version_check() in /home/folder/public_html/wp-includes/update.php:742 Stack trace:
#0 /home/folder/public_html/wp-includes/class-wp-hook.php(287): _maybe_update_core(”)
#1 /home/folder/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(true, Array)
#2 /home/folder/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#3 /home/folder/public_html/wp-admin/admin.php(170): do_action(‘admin_init’)
#4 /home/folder/public_html/wp-admin/index.php(10): require_once(‘/home/folder/…’)
#5 {main} thrown in /home/folder/public_html/wp-includes/update.php on line 742————————————————————
This error did not harm anything on the front end of the sites (They are working fine).When I log in to the dashboard of the other sites on the network, they work fine.
– domain.com/site1/wp-admin/ < = Ok
– domain.com/site2/wp-admin/ < = Ok
– domain.com/site3/wp-admin/ < = OkActions I have taken:
– Review and change the .htaccess file (It has configured the www redirects and SSL. It has been verified in other installations)
– Disable plugins
– Update the wp-admin and wp-includes folders
– Disable the Cache plugin (W3TCache and Delete the configuration in .htaccess)
– Increase the Memory Limit, increased to ‘1024M’ (in the wp-config file)
– I have checked the user permissions on the files, inside the cPanel.
All this I have checked and the error still persists.I would like to understand and know why the errors were generated, and it only affects the network administrator, and the other sites on the network can be accessed normally.
Additional Information:
– WordPress: 5.4.2
– Multisite: Sub-directory
– Theme: Divi 4.4.8
– Google server (not shared), PHP7 (Updated more than a month ago)Regards and thanks beforehand!!
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