error404 on 2nd booking event page
I expect this is due to changes made to accommodate WP URL changes.   If the URL has civiwp in it (and it should) Then I would:

make sure that the base page is set - go to https://example.org/wp-admin/admin.php?page=CiviCRM&amp;q=civicrm%2Fadmin%2Fsetting%2Fuf&amp;reset=1

Review the Base Page setting and value, it cannot be blank

Make sure there is a published page that matches the one in that page

If there is no value there, add one, civicrm is the default and then create a WP page with that slug

Make sure the page is public and visiuble to all

Once you've done that (or confirmed the base page exists) Visit this page https://example.org/wp-admin/options-permalink.php

Confirm that your permalinkls are set to anything EXCEPT Plain

If it is set to Plain change to one of the other options and save

If it is not set to plain, you can exit the page


Then retry the form.