GnuCash quotes suddenly :- " Unable to retrieve quotes for these items:"

[WasserLand]

Ubuntu 16.04. Gnu Cash ver  2.6.17

Price Editor suddenly "Unable to retrieve quotes for these items:" 
Yahoo  ASX.

Has been working very well for years but very recently has failed. I see 
there is an Finance::Quote update being discussed.  Does that have 
something to do with my problem?

Help.  Suggestions please . . . .

Dave W