Hi,
You should turn on WP_DEBUG in your wp-config.php to look at the error.
https://codex.ww.wp.xz.cn/Debugging_in_WordPress
If error points to plugin.
Use FTP to delete it and re-install via WordPress admin
If error points to WordPress.
Download new copy of WordPress and do a manual update on your website.
https://codex.ww.wp.xz.cn/Updating_WordPress#Manual_Update
Thank you
Moderator
t-p
(@t-p)
– If for some reason your server does not like auto updating, then try MANUALLY updating. Download a fresh copy of the WordPress .zip file to your computer, unzip it, and use that to copy up all files and folders EXCEPT the wp-config.php file and the /wp-content/ directory. You may need to delete the old wp-admin and wp-includes folders and files on your server before uploading the new ones. Please read the Manual Update directions first.
– Backup: If you haven’t already done, always backup everything (including your database) before doing any actions, just in case something really goes wrong. You can never have enough backups!
