Notice error

This is a notice error that shows up when creating a new forum item with either peepso og bbforum.

`
! ) Notice: Undefined property: stdClass::$edit_page in /Users/xxxx/Sites/grefsen.site/web/wp/wp-includes/capabilities.php on line 138
Call Stack
# Time Memory Function Location
1 0.0017 282448 {main}( ) ../post-new.php:0
2 0.9778 51978032 get_default_post_to_edit( ) ../post-new.php:83
3 0.9778 51979904 wp_insert_post( ) ../post.php:598
4 0.9896 52066416 do_action( ) ../post.php:3385
5 0.9896 52068944 call_user_func_array:{/Users/xxxx/Sites/grefsen.site/web/wp/wp-includes/plugin.php:525} ( ) ../plugin.php:525
6 0.9896 52069368 Wordpress_Creation_Kit->wck_save_single_metabox( ) ../plugin.php:525
7 0.9896 52069416 current_user_can( ) ../wordpress-creation-kit.php:1086
8 0.9896 52070392 call_user_func_array:{/Users/xxxx/Sites/grefsen.site/web/wp/wp-includes/capabilities.php:432} ( ) ../capabilities.php:432
9 0.9896 52070816 WP_User->has_cap( ) ../capabilities.php:432
10 0.9897 52071440 call_user_func_array:{/Users/xxxx/Sites/grefsen.site/web/wp/wp-includes/class-wp-user.php:721} ( ) ../class-wp-user.php:721
11 0.9897 52071960 map_meta_cap( ) ../class-wp-user.php:721
`

https://www.ads-software.com/plugins/wck-custom-fields-and-custom-post-types-creator/