{"readyState":0,"status":0,"statusText":"ConnectionError: Unable to complete 'send' request on 'XMLHttpRequest': Request could not be loaded

An issue has arisen with an error message

{"readyState":0,"status":0,"statusText":"NetworkError: Failed to execute 'send' on 'XMLHttpRequest': Failed to load...

This problem occurs when the following code is executed

$.ajax({
      url: "http://swingd.achievedigital.com/action/user_signin.php",
      dataType: 'json',
      crossDomain: true,
      method: 'POST',
      async: false,
      data: pstr,
      success: function(data) 

Switching

Changing the setting from Async: false to true triggers this error:

{"readyState":0,"responseText":"","status":0,"statusText":"error"}--"error"--""

If anyone has any suggestions or solutions, they would be greatly appreciated.

Answer №1

In most cases, a response with a status of 0 indicates that the request was either blocked from reaching the server or the server did not support Cross-Origin Resource Sharing (CORS).

  • Potential cross-domain issues (is CORS enabled?)
  • If the client cancels the request (e.g., navigating away from the page or manually aborting the XMLHttpRequest)

For more information, refer to XMLHttpRequest status 0 (responseText is empty)

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