Unable to add options on dashboard widget ?

$args['before_widget'] and $args['afters_widget'] (or after_widget) are things you’d add to a front-end sidebar widget. They have no relevance to dashboard widgets. The call to $args['before_widget'] is likely throwing an error because it’s not set.

Also, your wp_dashboard_setup hook callback is an anonymous function. This won’t work on PHP < 5.3. So double check your PHP version.

Related Posts:

  1. Reorder dashboard widgets
  2. Widgets not expanding on wordpress 3.3 widget dashbord
  3. Grabbing how Many Posts by Month for a Dashboard Widget
  4. Adding a single text input field to a custom Dashboard widget
  5. Allow users to give a dashboard widget a custom name using ACF
  6. How to customize WordPress dashboard for different users?
  7. How to add the “page” post type to Recent Activity widget displayed in admin?
  8. WordPress 3.8 – Dashboard 1 Column Screen Options
  9. Give Editor Access To Sidebar
  10. Extend WordPress 3.8 Site Activity Dashboard Widget to include more comments
  11. Enabling jquery when dragging available widget to sidebar area
  12. Prevent widgets removal
  13. Indexes of widgets instances starts with ‘2’ in ‘wp_options’ table
  14. Embed iframe or html page into dashboard widget
  15. Storing custom dashboard widget options in wordpress
  16. How to Remove All Widgets from Dashboard?
  17. How do I save data from submitted form from widget
  18. How to listen to color changes on the color picker?
  19. How to use control_callback when creating a widget via functions.php or plugin?
  20. Role that can edit only widgets, not other theme options
  21. How can I delete all inactive widgets?
  22. How do I use the control callback when creating a simple dashboard plugin
  23. Ban certain widgets from certain sidebars
  24. How to Make a Custom Dashboard Widget to Display Custom Notification from Admin?
  25. Add a banner to the Dashboard
  26. Different rss feeds in a single dashboard widget
  27. Using tabs in admin widgets [closed]
  28. How do I pass arguments to dashboard widget callback functions?
  29. Multiple users editting widgets
  30. Add new section to “Right Now” widget
  31. dynamic_sidebar() returns false in admin section
  32. add widgets to dashboard for easy access for clients?
  33. wp_count_posts, wp_count_terms and wp_count_comments for specific user?
  34. Replace dashboard widgets with banner ad
  35. Custom dashboard widget search box
  36. Hide all Dashboard Widgets (not remove)
  37. How to get “Widget Logic” plugin’s input value in a custom widget code (to display on the Widget admin page)
  38. wp_editor is not rendering shortcode
  39. Dashboard Widgets – Add Admin Page With Same Functionality
  40. Custom User Field in Dashboard Widget
  41. How to make a can’t hide widget?
  42. Create widget in dashboard displaying a custom user field?
  43. Organizing the position of widgetized areas in the backend
  44. Fire on widgets_init only on dashboard
  45. RSS dashboard widget not showing visuals
  46. How to create a dashboard widget for one user
  47. How to position custom dashboard widgets on side column
  48. Dashboard Widget drawn before opening HTML tag
  49. How to change color of registered widget areas in admin?
  50. Remove “Content” and “Discussion” from Right Now Dashboard Widget
  51. Create Dashboard Widget with form to keep team’s record
  52. modifying title (in dashboard) for different widget instances
  53. How to change widget’s form color in admin?
  54. Adding dashboard widgets to show – custom post type stats, information from other plugins
  55. Editing Help Section
  56. Change number of widget columns in dashboard?
  57. Quick Draft widget in weird place on dashboard after being re-added
  58. A message to clients in the dashboard widget received from another site
  59. Set a dashboard widget to the top?
  60. Array showing all values of loop instead of specific value to post
  61. How can I add a widget area to the top of the Dashboard?
  62. Reposition the widget sidebar in Appearance->Widgets
  63. Handling dozens of sidebars
  64. Can I use wp_widget_rss_output to show my site’s feed in the dashboard?
  65. WordPress version quick check?
  66. Registered widget is showing up collapsed in the dashboard
  67. Widget Areas Still Appearing in WP ADMIN When They Shouldn’t
  68. can’t edit widgets after moving from subfolder to root
  69. Creating an custom admin page for editing widgets
  70. Taxonomies not showing in WP Dashboard Right Now widget
  71. Database size Widget
  72. How to make custom dashboard widget to display alert in front-end?
  73. How to show WordPress Dashboard Widgets on Frontend?
  74. class WP_Widget – Different dashboard preview for custom widget
  75. Custom dashboard widget – load style only for added widget
  76. How to refresh Theme Customizer after change color inside wpColorPicker?
  77. What is the best way to include a widget in a Page?
  78. How to process content in a widget? [duplicate]
  79. How to retrive widget title/data
  80. Separate backend “Widgets” page for each language
  81. How do I embed in a text widget?
  82. Contact Form in sidebar [closed]
  83. Display the date before the post title in recent posts widget
  84. WordPress Plugins won’t save
  85. How to get view count of every page on site and add that (increasing) number to Dashboard Widget
  86. Block-based Widgets Editor – how to enable a title
  87. Dashboard menu missing
  88. Widget on the right side of the page overlaps with the left side [closed]
  89. How to get options of all active widgets ?
  90. Display a widget on a specific type of archive
  91. Add a specific css to a widget
  92. Select two value from meta key and post meta
  93. How to remove date in Recent Post widget?
  94. Widgets are not displaying in my theme
  95. Prevent widgets from disappearing when swtiching from parent to child theme
  96. How to show Widget in Content Bottom part on home page in twenty sixteen theme
  97. Randomizing the RSS Widget
  98. Why is the phone number a hyperlink on desktop sites, in my widget?
  99. How to exclude a widget from showing up on a page?
  100. jQuery “on” handler does not fire on newly inserted widgets [closed]