Hello Kay,

Thank you for reaching out to us. I understand the inconvenience you're experiencing with DPCalendar and SPPB installed on your Joomla site.

It seems that there might be a compatibility issue between DPCalendar and the SP Page Builder plugin. The error message you're encountering, "Event onContentAfterTitle only accepts String results," indicates a conflict between the two extensions. I would request you to contact your extension provider to make compatible for Page builder.

Thank you for your patience and understanding.

Best regards,

Toufiqur Rahman (Team Lead, Support)