status.py: Fix for exception while stopped nagios service

status.py

@@ -184,7 +184,7 @@ class __nagios_status__(dict):
 
 
 class nagios_status(__nagios_status__):
-    URL = "nagios4/cgi-bin/statusjson.cgi?query=servicelist&details=true"  # &servicestatus=warning"
+    URL = "nagios4/cgi-bin/statusjson.cgi?query=servicelist&details=true"
     KEY_DATA = 'data'
     KEY_SERVICELIST = 'servicelist'
 
@@ -218,6 +218,8 @@ if __name__ == "__main__":
         s = nagios_status(args.hostname, args.secure, args.last)
     except requests.ConnectionError:
         print(headline(not args.monochrome) + "Can not connect to given host.")
+    except requests.exceptions.JSONDecodeError:
+        print(headline(not args.monochrome) + "No data received. Nagios is possibly down.")
     else:
         if args.all:
             print(s.__str__(color=not args.monochrome))