bug: fix an issue with a possible SSH command in BOS+.

pyasic/miners/backends/bosminer.py

@@ -1038,6 +1038,7 @@ class BOSMiner(BaseMiner):
                 pass
 
         # get light via ssh if that fails (10x slower)
+        try:
             data = (
                 await self.send_ssh_command("cat /sys/class/leds/'Red LED'/delay_off")
             ).strip()
@@ -1045,6 +1046,8 @@ class BOSMiner(BaseMiner):
             if data == "50":
                 self.light = True
             return self.light
+        except TypeError:
+            return self.light
 
     async def get_nominal_hashrate(self, api_devs: dict = None) -> Optional[float]:
         if not api_devs: