KF5 - Updating prices doesn't work

[aga]

Just tried to update stock prices for the first time under KF5.  It just
hangs at 68%, having output to the console only, "created tmpfile".
There is no expected entry  in /tmp - in fact no entry at all.

I tried Update all, Update selected..., and also tried  a different
source, with no change of symptoms.

I have been having intermittent problems on 4.8 with Morningstar, but at
least that made an attempt at working, albeit not always successfully.

Has anyone else tried this yet?

Allan