add command to clear ln blacklist, prevent error in pay() from killing Peer

electrum/commands.py

@@ -793,6 +793,10 @@ class Commands:
         self.network.config.fee_estimates = ast.literal_eval(fees)
         self.network.notify('fee')
 
+    @command('n')
+    def clear_ln_blacklist(self):
+        self.network.path_finder.blacklist.clear()
+
 def eval_bool(x: str) -> bool:
     if x == 'false': return False
     if x == 'true': return True

electrum/lnbase.py

@@ -826,9 +826,7 @@ class Peer(PrintError):
 
         self.update_fail_htlc[payload["channel_id"]].put_nowait("HTLC failure with code {} ({})".format(code, code_name))
 
-    @aiosafe
     async def pay(self, path, chan, amount_msat, payment_hash, pubkey_in_invoice, min_final_cltv_expiry):
-        # FIXME aiosafe is breaking "raise PaymentFailure"
         assert chan.get_state() == "OPEN", chan.get_state()
         assert amount_msat > 0, "amount_msat is not greater zero"