Has anyone else seen the above error under Joomla and CiviCRM 5.11.0 when running the Event Report: Attendee List? I've done a bit of troubleshooting and it appears it seems when a custom form value is empty and is then in the form of an empty array rather than an empty string. A workaround is to test for the variable type and, if it is an empty array, replace it with an empty string. There seems no longer to be a Joomla demo site, so can't replicate it.$attributes values

I plan to raise this as an issue, too.

  • For demos there is joomla.demo.civicrm.org, although it seems an older version.
    – Demerit
    Mar 26, 2019 at 17:51
  • I am seeing this error too on Wordpress at this URL: mydomain.com/wp-admin/…
    – CTG
    Apr 2, 2019 at 12:16
  • it's there on drupal as well, using a recent CiViCRM version of 5.21
    – Doka
    Feb 4, 2020 at 10:07


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