Bug#1099119: Same behaviour, same solution.

[Tim Boneko]

Starting gnome-calculator from the terminal showd this:

	gnome-calculator 

	** (gnome-calculator:6987): WARNING **: 12:14:08.867:
currency-provider.vala:386: Cannot use ECB rates as don't have EUR rate

	** (gnome-calculator:6987): WARNING **: 12:14:09.041:
currency-provider.vala:161: Couldn't download IMF currency rate file:
HTTP/2 Error: INTERNAL_ERROR

	(gnome-calculator:6987): libsoup-WARNING **: 12:14:09.041:
(../libsoup/soup-session.c:334):soup_session_dispose: runtime check
failed: (soup_connection_manager_get_num_conns (priv->conn_manager) ==
0)

	(gnome-calculator:6987): libsoup-WARNING **: 12:14:09.041:
(../libsoup/soup-connection-manager.c:78):soup_host_free: runtime check
failed: (host->conns == NULL)
	zsh: killed     gnome-calculator

Doing 

	gsettings set org.gnome.calculator refresh-interval 0

with user rights fixed the issue instantly.
Cheers,

	tim