I had been experiencing this Ajax error also, while creating a view. To be clear, the error was:
"Oops, something went wrong. Check your browser's developer console for more details."
what resolved the issue for me was to shorten the machine name of the view display. It had been 40+ characters long and I reduced it to something less than 16 characters.
#3 solved my issue as well. Attempting to edit any content on the site would return a 'white website error page', and an examination of the apache log gave:
Uncaught PHP Exception Drupal\\Component\\Plugin\\Exception\\PluginNotFoundException:
"The "node_type" plugin does not exist.
Valid plugin IDs for Drupal\\Core\\Condition\\ConditionManager are:
condition_group, group_type, response_status, request_path, current_theme, user_role, webform, entity_bundle:block_content, entity_bundle:comment, entity_bundle:contact_message, entity_bundle:crop, entity_bundle:group_config_wrapper, entity_bundle:group_relationship, entity_bundle:group, entity_bundle:media, entity_bundle:node, entity_bundle:redirect, entity_bundle:shortcut, entity_bundle:taxonomy_term, entity_bundle:webform_submission, entity_bundle:section_association, entity_bundle:menu_link_content, entity_bundle:
paragraph" at /var/www/storefront/web/core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php line 53, referer: http://localhost/After running
drush eval 'include_once(DRUPAL_ROOT . "/modules/contrib/pathauto/pathauto.install"); pathauto_update_8108()'
I was able to edit content.
We are depending on this module in our update. Will look into issues.
I'm very interested in seeing the table properties come back. Could this be re-opened again please?