Running CiviCRM 5.13.5 on Drupal 7.67. I have all admin permissions, and all permissions relating to CiviReport.
Trying to run reports on CiviMail to export as CSV everyone who opened a particular mailing, so I can create a group of those people and send them a follow-up email. (Not sure if that's the best process to retarget those people who are engaging with a specific email - if not please let me know.)
When I click on a specific mailing and go to Reports > Mail Open reports, I can get to this screen.
However when I click Actions > Export as CSV, I get a 403 error:
403 Forbidden Access to this resource on the server is denied!
This same error also comes up when I go to Reports > Mailing Reports > Mail Opened.
Thanks in advance for your help!