In some circumstances device.last_seen can be None (#25690)

2019-08-04 16:12:16 +02:00 · 2019-08-04 16:12:16 +02:00 · 2925f9e57a
parent f8753a0c92
commit 2925f9e57a
1 changed files with 3 additions and 1 deletions
--- a/homeassistant/components/unifi/device_tracker.py
+++ b/homeassistant/components/unifi/device_tracker.py
@ -296,7 +296,9 @@ class UniFiDeviceTracker(ScannerEntity):
        )

        if (
-            dt_util.utcnow() - dt_util.utc_from_timestamp(float(self.device.last_seen))
+            self.device.last_seen
+            and dt_util.utcnow()
+            - dt_util.utc_from_timestamp(float(self.device.last_seen))
        ) < detection_time:
            return True
        return False