coins tab: if we do not know whether we can swap a utxo, assume we can

electrum/gui/qt/utxo_list.py

@@ -238,6 +238,9 @@ class UTXOList(MyTreeView):
         value = sum(x.value_sats() for x in coins)
         min_amount = self.wallet.lnworker.swap_manager.get_min_amount()
         max_amount = self.wallet.lnworker.swap_manager.max_amount_forward_swap()
+        if min_amount is None or max_amount is None:
+            # we need to fetch data from swap server
+            return True
         if value < min_amount:
             return False
         if max_amount is None or value > max_amount:

electrum/submarine_swaps.py

@@ -1121,6 +1121,8 @@ class SwapManager(Logger):
     def max_amount_forward_swap(self) -> Optional[int]:
         """ returns None if we cannot swap """
         max_swap_amt_ln = self.get_max_amount()
+        if max_swap_amt_ln is None:
+            return None
         max_recv_amt_ln = int(self.lnworker.num_sats_can_receive())
         max_amt_ln = int(min(max_swap_amt_ln, max_recv_amt_ln))
         max_amt_oc = self.get_send_amount(max_amt_ln, is_reverse=False) or 0