I have installed issue tracker application from forge.
After creating tickets and logging in by Support manager id the charts for My open tickets by priority, My average response time by category, My solved versus overdue tickets , My tickets by location are not displaying any data those charts are blank.
1. Check If Data Exists
2. Confirm Role & Permissions
3. Check Aggregation & Filters
4. Review Database Tables
5. Inspect Chart Data Sources
6. Check Error Logs
Try these steps and let me know what you find!