CPT issue: Warning: call_user_func_array() expects parameter 1 to be a valid callback

I’ve removed the custom_meta_boxes. I don’t have to have them and it solves the problem. I still don’t understand why they were a problem, but if I can do without them I will.

I appreciate everyone’s efforts.

Note: rolling back to 4.7 made no difference.

Related Posts:

  1. Help With Warning on creating new Post types?
  2. Custom meta box in custom post type not working
  3. Custom post type – Errors
  4. WordPress is giving a warning but my code is working fine
  5. Remove Custom Taxonomy Metabox from Custom Post Type Screen
  6. Get terms by taxonomy AND post_type
  7. Permalink Structure for Multiple Post Type Archives by Taxonomy
  8. Allow user to Edit Posts but not Add New?
  9. WordPress 4.4+ : How to revision CPT + metadata
  10. Highlight menu item when on a custom post type?
  11. Querying custom posts and regular posts
  12. Post slug changed using code doesn’t reflect on editor when post is published
  13. Detect meta value changes when post is updated (post_updated)
  14. Remove Custom Post Type menu for non-administrator users.
  15. Using Query Posts With Multiple Post Types And A Taxonomy
  16. Display Custom Post Type in divs just thumb and title
  17. Custom Taxonomy List links being re-written
  18. wp_list_categories and custom post types
  19. How to show particular category all post in custom single file
  20. Bulk 301 redirect for custom post type
  21. Associate Taxonomies Across Post Types
  22. ‘category__and’ for custom taxonomy?
  23. Custom post type hierarchical permalinks not behaving as expected for parent/child pages
  24. How to remove ‘create new post’ entry for a custom post type?
  25. Changing ‘view’ link for custom post type on list post screen?
  26. Check if a specific custom field exists?
  27. Fetch ID’s associated with a custom post type when translated with WPML?
  28. Custom post type show on both Home and Date Archive
  29. Create custom PAGE with register_post_type
  30. Custom post types archive redirect
  31. Update CPT post meta with update_post_meta and cron job
  32. Can’t query tag and post_type at the same time
  33. Am I using the flush_rewrite_rules function in the right place?
  34. How to make global post work with custom post type?
  35. How should I structure my post types?
  36. Post Quote with image on header for news site
  37. 301 redirect for converted post type
  38. Custom post types team data
  39. Team club with CPTs and user registration + user dashboard
  40. WordPress permalink / slug with numbers in the middle of the post name shows the broken page
  41. Custom post type editor with dynamic selects, one drop down populating a second second drop down not working
  42. Custom Post Type and Category Base Rewrite Issue
  43. Order a custom post type admin screen by a second custom post type title
  44. Lost of query parameter when using permalink
  45. CPT category hierarchy
  46. How To Import CPT With Only Few TEXT ACF Fields From Front End?
  47. wordpress remove views from action links in a custom post
  48. WordPress custom slug rewrite
  49. How do I create an overview page with custom calculations from a post-type?
  50. Creating two loops based on different logic
  51. Custom Posts values in custom post overview
  52. Displaying multiple post types on home page
  53. Archive links for custom post types
  54. Query to get child pages of current page and display it in action hook
  55. Different videos for different posts
  56. Make a custom column sortable by a value from a different custom post type
  57. Custom post type returns bad post ID
  58. Custom Post Types,Permalink and Heirarchy
  59. Related posts meta_query CPT
  60. Post visibility option to theme front-end for author to select?
  61. Custom MetaBox : Food Menu Item Available Dates
  62. Preventing Truncation of First Post
  63. how to compare different timestamps in wp-query for events custom post types?
  64. Sorting the Loop by Taxonomy Value
  65. custom posts permalinks url rewriting
  66. Can I get an auto-populated dropdown list of other custom posts in a custom post edit page?
  67. Getting Same Description in All the Custom Taxonomy Posts
  68. Check that a slug is present in the get_terms request
  69. Custom Post Type Single Page is not working
  70. Custom Post Type action on post update
  71. Custom post type shortcode
  72. How to enable to change Permalinks for Individual Custom Post Type
  73. Show Post Types customized in Template Page
  74. custom post types, custom fields and normalization
  75. Static blog / posts page issue
  76. How can I fetch all the dates from custom fields from various different custom post types and show / list them at one place in ascending order?
  77. How to replicate data storage and querying using WordPress. Custom posts/fields or Custom db tables?
  78. custum post inner page not taking single-gallery.php? it redirecting to archive page
  79. WP gives 404 error for custom post type with GET variable
  80. Making Custom Posts behave like pages
  81. How to show other custom post type other than current post type in a single.php
  82. How to check if meta box value is false for all posts then do something based on that
  83. Pagination fault in custom post type archive page [duplicate]
  84. Trying to combine multiple WordPress queries
  85. Creating shortcodes with user created forms
  86. Custom Post Type post not appearing
  87. preselected custom fields in custom post type
  88. get_the_term_list() wanting to loop through the returned values
  89. Displaying child taxonomies
  90. Adding some HTMl code as posts doesn’t work but it does if it is added directly in the file?
  91. Pagination not working on custom post type archive
  92. How do I provide a search form for a specific post type, that is capable of searching within custom fields of the specified CPT?
  93. Two Permalinks with one Taxonomy (custom taxonomy) and (custom post type -> custom taxonomy)
  94. Removing custom post type name from permalink
  95. One WP website as content source for several others
  96. Detach WordPress Media Files In Bulk
  97. How to get custom taxonomy from Custom Post Type to display in Post Block in Unlimited Elements
  98. How to use custom post type and taxonomy for car specs in wp
  99. Advanced Custom Fields Custom Post Types Heirarchy
  100. Сustom posts are displayed in the wrong menus
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)