When I tried to make a Custom Report and by using any condition related to date and select “between” and if I instert any date range this error appears
What happens when you change the first dates ?
In the example you showed, the report select transactions dated 9/6/2020, so it probably has no transactions to use for the selection by the Payment or Receipt / Date field
the same error appears
I can reproduce this - it seems like a bug
Custom report with no Where clause (note Payment or Receipt/Date has a few records with data
Report
Add a where clause
give Internal error
Thanks. Fixed in the latest version (20.6.80)
Sorted - at least for my custom report