reports were broken when there were running backups do to lack of complete logs

burpui/misc/backend/burp1.py

@@ -538,8 +538,10 @@ class Burp(BUIbackend):
         cls = []
         bkp = []
         for cli in clients:
+            if not cli:
+                continue
             client = self.get_client(cli['name'])
-            if not client:
+            if not client or not client[-1]:
                 continue
             stats = self.get_backup_logs(client[-1]['number'], cli['name'])
             os = stats['os'] if 'os' in stats else "unknown"

burpui/misc/backend/burp2.py

@@ -889,7 +889,7 @@ class Burp(Burp1):
 
         if WITH_GEVENT:
             gevent.joinall(threads)
-            ret = [x.value for x in threads]
+            ret = [x.value for x in threads if x.value]
 
         # Here we need to reverse the array so the backups are sorted by num
         # ASC