errors in backend after update to 29.0 / custom post types

hi there.

i added custom post type "exhibits" with Custom Post Type UI plugin which works fine. after updating the theme to 29.0 i get a lot of errors - see below.

what can i do?

Warning: Undefined property: Mfn_Post_Type_Icons::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Undefined property: Mfn_Post_Type_Icons::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Undefined property: Mfn_Post_Type_Icons::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Undefined property: Mfn_Post_Type_Template::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Undefined property: Mfn_Post_Type_Template::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Undefined property: Mfn_Post_Type_Template::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Undefined property: Mfn_Post_Type_Product::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Undefined property: Mfn_Post_Type_Product::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Undefined property: Mfn_Post_Type_Product::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Undefined property: Mfn_Post_Type_Page::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Undefined property: Mfn_Post_Type_Page::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Undefined property: Mfn_Post_Type_Page::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Undefined property: Mfn_Post_Type_Post::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 135 Warning: Undefined property: Mfn_Post_Type_Post::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 136 Warning: Undefined property: Mfn_Post_Type_Post::$dynamic_fields in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Trying to access array offset on null in /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php on line 138 Warning: Cannot modify header information - headers already sent by (output started at /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php:138) in /home/.sites/42/site2955/web/abo3000/wp-includes/functions.php on line 7310 Warning: Cannot modify header information - headers already sent by (output started at /home/.sites/42/site2955/web/abo3000/wp-content/themes/betheme/functions/post-types/class-mfn-post-type.php:138) in /home/.sites/42/site2955/web/abo3000/wp-admin/admin-header.php on line 14 

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