Title: Error affecting edit posts
Last modified: March 17, 2026

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# Error affecting edit posts

 *  Resolved [Mick](https://wordpress.org/support/users/haarbollen/)
 * (@haarbollen)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/error-affecting-edit-posts/)
 * I had an error accuring as I tried to edit a page and turned on php messages 
   upon errors.
   This comes out (below) whenever I try to edit pages or posts until
   I turned off ‘My Calendar’. Any idea what causes the plugin to create these errors?(
   Have them on every site where I use ‘My Calendar’ which I am quite fond of.
 * Thanks in advance
   Mick`Fatal error: Uncaught ArgumentCountError: 5 arguments 
   are required, 3 given in /customers/1/9/0/cm5lznu9s/webroots/04b27e78/wp-content/
   plugins/my-calendar/includes/post-types.php:463 Stack trace: #0 /customers/1/
   9/0/cm5lznu9s/webroots/04b27e78/wp-content/plugins/my-calendar/includes/post-
   types.php(463): sprintf('%1$s planlagt t...', 'feb 14, 2026 @ ...', 'https://
   hadersl...') #1 /customers/1/9/0/cm5lznu9s/webroots/04b27e78/wp-includes/class-
   wp-hook.php(341): mc_posttypes_messages(Array) #2 /customers/1/9/0/cm5lznu9s/
   webroots/04b27e78/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, 
   Array) #3 /customers/1/9/0/cm5lznu9s/webroots/04b27e78/wp-admin/edit-form-advanced.
   php(212): apply_filters('post_updated_me...', Array) #4 /customers/1/9/0/cm5lznu9s/
   webroots/04b27e78/wp-admin/post.php(206): require('/customers/1/9/...') #5 {main}
   thrown in /customers/1/9/0/cm5lznu9s/webroots/04b27e78/wp-content/plugins/my-
   calendar/includes/post-types.php on line 463`

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [Mick](https://wordpress.org/support/users/haarbollen/)
 * (@haarbollen)
 * [2 months, 3 weeks ago](https://wordpress.org/support/topic/error-affecting-edit-posts/#post-18854097)
 * UPDATE!
   When I swith site language (backend -> settings) it seems to “solve” 
   the problem.Switching back to Danish causes the problem to come back!I’ll go 
   with English version – but it would be nice if it worked in Danish too :o)Best
   regardsMick
 *  Plugin Author [Joe Dolson](https://wordpress.org/support/users/joedolson/)
 * (@joedolson)
 * [2 months, 2 weeks ago](https://wordpress.org/support/topic/error-affecting-edit-posts/#post-18865047)
 * I’ve gotten the Danish translation updated; so this should be fine now.
 *  Thread Starter [Mick](https://wordpress.org/support/users/haarbollen/)
 * (@haarbollen)
 * [2 months, 1 week ago](https://wordpress.org/support/topic/error-affecting-edit-posts/#post-18866403)
 * Great, works just fine as I’m used to – thanks!

Viewing 3 replies - 1 through 3 (of 3 total)

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 * 3 replies
 * 2 participants
 * Last reply from: [Mick](https://wordpress.org/support/users/haarbollen/)
 * Last activity: [2 months, 1 week ago](https://wordpress.org/support/topic/error-affecting-edit-posts/#post-18866403)
 * Status: resolved