I have this problem for a while but till now I would rather use the Print button instead and use my own adobe pdf printer to create invoices.
Using the Print Button the naming format is as below
ComeToMamaLTD — Sales Invoice — 982 — 21_04_2020 — View.pdf
However when the PDF button works the the same invoice name generated nicley are like below
Invoice 982 - CustomerName
Today I have decided to investigate and I see that if I use the Default Template then the PDF button is working , however when use my own template (Bold Blue) with only changes to colour and using images for paid/unpaid. The PDF then does not work and jumps instead to Businesses Dashboard.
anyone else has the same problem?