404 Page when trying to send an email in CiviRules
I'm on Drupal 8 CiviCRM 5.27beta
When I try to add a CiviRule which includes the action to send an email, I get a 404 page not found in the final step:
Trigger = When Contact is changed Conditions = Field Value Comparison > Contact Subtype = Researcher AND Contact is in Group 'Contacts added in the last 7 days' Action = Send email
It gets to the first screen (is there a delay?) but I can't go to the second screen to set the details for which email to send, etc.
This is the link that gets a 404: https://mysite.org/civicrm/civirules/actions/emailapi?rule_action_id=2&action=add
Any suggestions what might be causing the issue?