Sales invoices are not recorded

1

I came from version 14.11.23 then i updated to 15.0.10. After checking the changes i saw that the sales from previous months in Sales invoice module is not anymore recorded.

Is there a way to fix this? Tried similar post with suggestions but does not seem to fix the issue.

thank you in advance.

2

I tried to simulate new sales invoice, but it does not record any sales unlike previous version.

UPDATE: This solves the problem. Add customer name to sales invoice from previous transactions.