Apologies but I'm not sure how to reproduce this bug. It occurs on a Composer based Drupal 8.9 dev instance on Pantheon. I cannot reproduce these errors in my local environment.
The errors occur when I try to Place a block or Embed a media in a Wysiwyg editor field or want to Browse available tokens in the Pathauto admin UI. The modals don't load as expected. In the console I see errors like the following (this one when trying to embed a media image).
AjaxError:
An AJAX HTTP error occurred.
HTTP Result Code: 200
Debugging information follows.
Path: /media-library?media_library_opener_id=media_library.opener.editor&media_library_allowed_types%5B0%5D=image&media_library_allowed_types%5Baudio%5D=audio&media_library_allowed_types%5Bdocument%5D=document&media_library_allowed_types%5Bremote_video%5D=remote_video&media_library_allowed_types%5Bvideo%5D=video&media_library_selected_type=image&media_library_remaining=1&media_library_opener_parameters%5Bfilter_format_id%5D=full_html&hash=tx_2uZjQrTKMKLdeMB5udfRFqUkMxYXVUaLQvyZrDwE
StatusText: OK
CustomMessage: The response failed verification so will not be processed.
ResponseText: [{"command":"settings","settings":{"ajaxPageState":{"theme":"seven","theme_token":"cUuKE7ofRja52pYrFXcZmOwhPDF-0P3fMpNASDi3agc","libraries":"admin_toolbar\/toolbar.tree,admin_toolbar_tools\/toolbar.icon,big_pipe\/big_pipe,book\/drupal.book,ckeditor\/drupal.ckeditor,ckeditor\/drupal.ckeditor.plugins.drupalimagecapti…
The errors are coming from /core/misc/ajax.js:229-234. The section which I commented out below seems to be the cause of these errors.
success: function success(response, status, xmlhttprequest) {
if (typeof response === 'string') {
response = $.parseJSON(response);
}
/*if (response !== null && !drupalSettings.ajaxTrustedUrl[ajax.url]) {
if (xmlhttprequest.getResponseHeader('X-Drupal-Ajax-Token') !== '1') {
var customMessage = Drupal.t('The response failed verification so will not be processed.');
return ajax.error(xmlhttprequest, ajax.url, customMessage);
}
}*/
return ajax.success(response, status);
},Postponed: needs info
9.5
Last updated
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Wonder if you are still experiencing this for D10?
Since there's been no follow up going to close out, if still an issue in D11 please reopen.