add non-opaque error on hue connect failed.

services/hue/bridge.go

@@ -348,7 +348,7 @@ func (b *Bridge) SetStates(patch map[string]device.State) {
 func (b *Bridge) Run(ctx context.Context, bus *lucifer3.EventBus) interface{} {
 	hwEvents, err := b.RefreshAll()
 	if err != nil {
-		return errors.New("failed to connect to bridge")
+		return fmt.Errorf("failed to connect to bridge: %s", err)
 	}
 
 	bus.RunEvent(events.Log{