An internal assertion test couldn't be completed at location ReportUtils.callJavaClass5

 While running the 'Make EFT Payment' process for a terminated employee I have received the below error

Error An internal assertion test couldn't be completed at location ReportUtils.callJavaClass5

Error The bank account associated to this payment has a start date after the payment process date.

Issue was related to the personal payment method with that particular employee, there were two payment methods active for the payment period, please check if that is the case. After end dating one of those, EFT process went fine. 

It does happen when you create a new payment method and instead of doing "Correction" to the old one you do the "Update", which creates a date effective records.

Other solution is, you can set the 

"Historic Payment Removes the validation to look for active banks as of the process date in payments processes."

flag to 'Y' in the 'Payroll Process Configuration' for Default group, by default it is No. By the definition it will bypass the validation for inactive banks.

Navigation: My Client Group -> Show More -> Payroll Process Configuration under 'Payroll' section