WordPress Heartbeat API cannot parse data

Not 100% sure if that’s the cause but can you try replacing $ with jQuery?

I remember seeing something like this in the past in a similar case.

Related Posts:

  1. How to link WordPress heartbeat to ajax form
  2. Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
  3. Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
  4. jQuery: Performing synchronous AJAX requests
  5. jQuery’s .on() method combined with the submit event
  6. AJAX Implementation
  7. Drag and drop multiple file upload using Ajax WordPress
  8. How to securely add an Ajax button to a WP Admin page?
  9. Turn jQuery.ajax() request into XMLHttpRequest (vanilla JavaScript)
  10. CPU usage: AJAX and Heartbeat API on admin pages
  11. admin-ajax.php HTTP400: BAD REQUEST – The request could not be processed by the server due to invalid syntax
  12. WordPress AJAX Call Not Return Result
  13. Why does WordPress Heartbeat login not refresh the nonces?
  14. How to add WP API and JS featured image attachment
  15. jQuery Ajax passing empty parameters to my function?
  16. WordPress Admin AJAX Serialize
  17. Ajax Modal Flickers When Opened Multiple Times
  18. splitting the URL using jQuery
  19. How would you update a frontend form with AJAX
  20. Why is on status span no search results?
  21. How to handle 400 status in Ajax [duplicate]
  22. Refresh Markercluster after ajax call
  23. AJAX request randomly stop working and returns error 400
  24. Bad request 400 from custom ajax call
  25. All AJAX requests return a 400 error
  26. How to pass parameters from jQuery ajax into PHP function?
  27. I can’t get a return value from Ajax
  28. WordPress AJAX return 0 – My case
  29. merge wp rest api query to get posts per category does not work
  30. WP AJAX post filter > do something with empty value
  31. 403 error When i send ajax request on WordPress website
  32. AJAX jQuery post frontend returning failed to load resource status 400
  33. Load more posts in the same category – Ajax + Timber
  34. How to jQuery Ajax show new data from successful insert?
  35. wp_mail doesn’t work when logged in?
  36. Problems with wordpress nonces in Ajax call
  37. Ajax call in WordPress – unable to display the data on the page
  38. Get post content and show it in a div
  39. Output multi-steps form results in same page
  40. Full Front End, AJAX comment system and comment reply script
  41. How to display contact form 7 form in vanilla js without jquery in frontend
  42. Ajax Favorite from foreach (how to specify which result result is processed)
  43. Display full WordPress post under search form using AJAX
  44. WordPress Select Option Load Custom Fields
  45. Uncaught TypeError: Cannot read properties of undefined (reading ‘message’) [closed]
  46. Fetch value using AJAX in WordPress
  47. Query data after an Ajax insert
  48. AJAX not working when clicking load more button, when two terms are present in tax_query
  49. Search live Ajax
  50. javascript onClick update user_meta from jquery.ajax
  51. WordPress POST AJAX call, var_dump($_POST) NULL and AJAX response empty when inside ob_start
  52. jQuery.post returns 0
  53. Content including hooks inside wp-settings.php are being called twice in WordPress
  54. Opening Modal popup on Ajax form submission
  55. Ajax sometimes work and sometimes just don’t work
  56. My function containing a mysql query launched by ajax is not working in wordpress. What am I missing?
  57. jQuery ajax method does not return data
  58. JS global variable doesn’t update
  59. 400 Bad Request getting on AJAX Call
  60. jQuery AJAX url wit variable
  61. React to AJAX adding to the page
  62. Updating Jquery object with newly created elements after AJAX call
  63. How to pass array from jQuery to PHP with AJAX in WordPress?
  64. Download doccument on server rather than clients browser
  65. AJAX POST Value not being returned – WordPress – AutoTrader API
  66. Javascript output now showing in custom widget
  67. Ajax call not working anymore
  68. Can’t get next post info with ajax
  69. How to inject data content from external json into a modal, using UIkit?
  70. Ajax by worpdress affects called jquery inside template file
  71. WordPress sound bell when new data will add
  72. Can’t access data from database using AJAX
  73. WordPress Ajax send response on every iteration of a loop
  74. Custom WP rest api endpoint only working on non https?
  75. Bad Request 400… jQuery ajax post of json data to wordpress admin-ajax.php
  76. How to update my jquery/PHP function to add/remove user as favorites in (WordPress) users list
  77. AJAX call not initializing for non-admins in WordPress
  78. JQuery UI Autocomplete/Autosuggest WordPress
  79. Logout and redirect WordPress user id without he refresh the page
  80. How to show custom fields in modal in category page
  81. Help with jquery/ajax requests
  82. Pass request headers in a jQuery AJAX GET call
  83. “The Events Calendar” plugin by Modern Tribe in WordPress not working
  84. Ajax takes 10x as long as it should/could
  85. What is the simplest ajax upload plugin or script to be used with wordpress?
  86. How to call a PHP function with Ajax when the user clicks a button
  87. edit-comments.php comment_row_actions ajax problem
  88. jQuery Ajax() doesn’t work when the page is accessed as a WordPress template page
  89. Why is my AJAX call not working?
  90. How to Access custom database content with AJAX onClick refresh of div inside member-only WordPress page?
  91. how to use reCaptcha v3 in wordpress custom login form?
  92. Only execute jQuery function(on document ready) on the page has shortcode from plugin [duplicate]
  93. WP_Session not acting with AJAX
  94. wp_verify_nonce not working
  95. Tags in WordPress 3.2
  96. Using ajax with wordpress
  97. WP_User_Query ignoring ‘meta_query’ arguments
  98. Get the_content with ajax
  99. Admin ajax error 400 when passing select value to populate another select
  100. Sending variable from ajax on form submit