diarratech Hello
Thank you for bringing the issue to our attention. We sincerely apologize for any inconvenience caused by the error on our demo site. Recently, we changed our demo server, and unfortunately, the demo link was not updated, which resulted in you viewing the old demo site.
Please use the following updated demo link: https://guru.demo.joomlart.com.
We assure you that the release package does not exhibit this issue. The error you encountered was specific to the old demo site, which utilized a much earlier version of the Guru component.
We appreciate your understanding and encourage you to explore the updated demo. Should you have any further questions or concerns, please do not hesitate to contact us.
Best regards,