Sometimes I have a 500 error ( from NGinx ) just because I have a “character” getting outputted before the first header gets written ( or in-between ).
Activate WP_DEBUG = true and see what happens. 99% of the case I could spot the error from there. ( and it was nearly all the time the above error ).
Post back if that doesn’t solve your debug difficulty problem. We’ll have a look at your apache config by then.
Related Posts:
- admin-ajax.php error 500
- admin-ajax.php calls fail if referrer is sent with 500
- How to require files in a custom endpoint
- While doing ajax, WordPress returning internal server error 500 and stating that my theme functions are undefined
- PHP “php://input” vs $_POST
- Google Maps API throws “Uncaught ReferenceError: google is not defined” only when using AJAX
- Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
- Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
- How to solve the error “SCRIPT7002: XMLHttpRequest: Network Error 0x80070005, Access is denied.” in IE
- Show spinner GIF during an $http request in AngularJS?
- Refresh HTML Page in Browser Automatically on Timer – Every 15 Min
- JavaScript implementation of Gzip
- jQuery: Performing synchronous AJAX requests
- ASP.NET MVC controller actions that return JSON or partial html
- jQuery’s .on() method combined with the submit event
- Ajax takes 10x as long as it should/could
- How to check if I am in admin-ajax.php?
- Best way to end WordPress ajax request and why?
- How to load wp_editor() through AJAX/jQuery
- How to cache json with wp-super cache
- Load minimum WordPress environment
- Why use wp_send_json() over echo json_encode()?
- Why use admin-ajax.php and how does it work?
- How to get a unique nonce for each Ajax request?
- Open a Thickbox with content trough AJAX
- Initialize TinyMCE editor / visual editor after AJAX insert
- Why not register shortcodes if is_admin dashboard?
- WordPress AJAX with Axios
- Why is die() used at the end of function that handles an Ajax request?
- Why might a plugin’s ‘do_shortcode’ not work in an AJAX request?
- Making my AJAX powered WordPress Crawlable
- Is there a JavaScript API? How to access public and private data in JS?
- Get Previous & Next posts by Post ID
- failed to load wp-admin/admin-ajax.php
- Using Backbone with the WordPress AJAX API
- Using Ajax with a Class file
- Ajax in a settings page (update_option is undefined)
- How to pass data parameter to ajax action function handler
- WordPress Ajax Data Security
- Displaying PHP Errors from admin-ajax.php
- wp_set_auth_cookie() doesn’t work in Ajax call
- gettext does not translate when called in ajax
- Execute one AJAX request after another AJAX request finished
- WP-AJAX vs WP REST API: What to use for requests to the website from outside?
- Ajax and autocomplete
- How to add to cart via AJAX Woocommerce [closed]
- Nonces and Cache
- SSL breaks customizer: page isn’t returned from ajax
- Are ‘wp_ajax’ and ‘wp_ajax_nopriv’ exclusive to authenticated and non-authenticated users?
- How to HTML5 FormData Ajax
- admin-ajax.php vs Custom Page Template for Ajax Requests
- How to override WP_DEBUG for Ajax responses?
- Stop admin-ajax?
- redirect out of wp-admin, without losing admin-ajax.php
- Call to undefined function add_action()
- Is it safe to assume that a nonce may be validated more than once?
- Including WordPress in RESTful API
- Multiple ajax nonce requests
- Get posts with ajax
- admin-ajax.php doesn’t work when using POST data and Axios
- How to call a PHP function with Ajax when the user clicks a button
- REST API endpoint for elasticpress autosuggest
- Ajax for non-logged-in users
- Contact Form 7 Custom Post Action
- Custom Form with Ajax
- How to process ajax requests correctly using ajax plugins
- ajax – why multiple calls to wp_create_nonce() return same value?
- Update user meta using with ajax
- Registering AJAX callback function that is part of a class without instantiating the class in function.php
- WordPress function that makes HTML safe to be sent via AJAX request
- How do I hook an Ajax request into a PHP callback?
- AJAX request on the frontend always returns 0 if user is not admin
- admin-ajax.php returns 0. How do I debug it and fix it?
- Ajax requests without JQuery
- Admin Notification after save_post, when ajax saving in gutenberg
- How to properly use wp.ajax.post?
- Load tinyMCE / wp_editor() via AJAX [duplicate]
- How to tie built in AJAX to an add_action?
- Using Nonces for AJAX that only retrieves data
- WordPress AJAX Login Screen
- AJAX vs Fragment Caching for W3 Total Cache [closed]
- Saving (Updating) Post / Page Edits With AJAX
- Is there any way of of making an admin-ajax request without the use of die()?
- How to verify nonce from Bulk/Quick Edit in save_post?
- Using ajax on categories and wordpress loops
- Custom PHP endpoint for a plugin’s AJAX call
- Detecting post type within init action
- Ajax request returning full page code
- Basic question on passing variables to AJAX in WordPress
- Cannot load admin-ajax.php. No access-control allow origin*
- Initialize JS with an ajax loaded ACF form
- WordPress embeds in AJAX inserted content
- How do I send an ajax request and get a response back from a function?
- admin-ajax.php vs .load() in WordPress
- Delete row of custom table in WordPress using AJAX
- jQuery Autocomplete in WordPress
- How to link WordPress heartbeat to ajax form
- How can I get logged in user’s session data from admin-ajax?
- How-to debug wp_ajax_* hook callback?
- Metabox cloning via Admin Ajax call issue