Describe the issue

Once the liquid-qt is launched, if the bitcoin server is not correctly configured, the app displays an ambiguous error message. A user may not adequately understand the need to install a bitcoin node.

If so, please list the steps to reproduce below:

Start liquid-qt app without other arguments (and without a configuration file).

Expected behaviour

Suggest to install bitcoin core (maybe with a link to bitcoincore.org) and to configure liquid appropriately.

Actual behaviour

Show an error message and halt the app.

Screenshots

Machine specs:

MacOSX 10.14.3