WT -> BCC Invoice Enhancement -> Un-check or Check Benefit Wise Billing Report - Gives Server error

Environment: Stage
Company: City of Walnut Creek For HSPL
Invoice Management

Getting Server error on Invoice Management after performing below steps:

Invoice Management > Add New > Un-check Benefit Wise Billing Report > Select required fields > save > Server error

Server error > Ok > It doesn't move further

So, we cannot create Invoice, with Benefit Wise Billing Report check box unchecked.

Please find the screen capture for the same.