Billable Hours to sales Invoice not working

I am new to this system.

I created a customer. Added billable hours to that customer. The billable hours show as uninvoiced under the customers. When I clink on the amount the button for ‘New Sales Invoice’ appears but nothing happens when I click it.

Initially I was using a previous version, on click it was a white screen. I then upgraded to the latest version. Now nothing happens when I click the “New Sales Invoice” button under customers>uninvoiced billable time

I scoured the forum for answers but could not find a reference. Kindly advice if it is something I am doing wrong or it is a bug I encountered?

I guess I didn’t tick the check box. Sorry this was an ID10T error on my part.

Thanks for the prompt reply.