Wordpress: admin-ajax.php 400 bad request - whats wrong with my code?

Troubleshooting the "wp-admin/admin-ajax.php 400 (Bad Request)" Error in WordPress PluginsПодробнее

Error 400 Bad request, Error 400 fixed, How to fix error 400Подробнее

Wordpress: 400 Bad Request when sending XHR from React.js to admin-ajax.phpПодробнее

Wordpress: 400 bad request admin-ajax file uploadПодробнее

Wordpress: Custom plugin giving: wp-admin/admin-ajax.php 400 (Bad Request)Подробнее

Wordpress: 400 bad request on admin-ajax.php only using wp_enqueue_scripts action hookПодробнее