Alphavantage not working in gnucash 2.6.17

[Patrick Alken]

Apologies if this has already been asked, but I couldn't find this exact
issue in the recent mailings.

I have:

gnucash: 2.6.17

F::Q: 1.47

My F::Q works from the command line:

----------

$ gnc-fq-dump alphavantage CSCO
Finance::Quote fields Gnucash uses:
    symbol: CSCO                 <=== required
      date: 11/27/2017           <=== recommended
  currency: USD                  <=== required
      last: 36.8700              <=\      
       nav:                      <=== one of these
     price:                      <=/       
  timezone:                      <=== optional
----------

However inside gnucash price editor I still get the "unknown error when
retrieving price quotes".

I have unchecked the "Get Online Quotes" flag from ALL of my stocks in
the security editor. However the price editor still gives me the same
error (unknown error).

gnucash --debug shows nothing related to quotes. I only get lines like this:

----

* 22:34:53  INFO <gnc.account> [xaccAccountGetBalanceInCurrency]  baln=0/1
* 22:34:53  INFO <gnc.account> [xaccAccountGetBalanceInCurrency]  baln=0/100
* 22:34:53  INFO <gnc.account> [xaccAccountGetBalanceInCurrency]  baln=0/100
* 22:34:53  INFO <gnc.account> [xaccAccountGetBalanceInCurrency]  baln=0/100

----

Can anyone advise how to diagnose the issue?

Thanks,

Patrick