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Hey,
So the site was unable to automatically or manually update to 6.1.1. So I downloaded the latest WP, and did an FTP update.
Since then, editing and updating pages or posts are not a very user friendly experience. Every time I’d like to preview, update or apply a change, I get a bunch of error messages. The changes do apply, but I need to go back or just refresh website root to get back to dashboard. Previews don’t work, as I only get the error messages. Any ideas how I could fix them?
The error messages I’m getting are
Notice: Function WP_Object_Cache::get was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::set was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::get was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::set was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::get was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::set was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Notice: Function WP_Object_Cache::delete was called incorrectly. Cache key must be integer or non-empty string, NULL given. Please see Debugging in WordPress for more information. (This message was added in version 6.1.0.) in .../wp-includes/functions.php on line 5835
Warning: Cannot modify header information - headers already sent by (output started at .../wp-includes/functions.php:5835) in .../wp-admin/post.php on line 231
Warning: Cannot modify header information - headers already sent by (output started at .../wp-includes/functions.php:5835) in .../wp-includes/pluggable.php on line 1416
Warning: Cannot modify header information - headers already sent by (output started at .../wp-includes/functions.php:5835) in .../wp-includes/pluggable.php on line 1419