diff --git a/ennstatus/api/model.py b/ennstatus/api/model.py
--- a/ennstatus/api/model.py
+++ b/ennstatus/api/model.py
@@ -255,10 +255,13 @@ class Server:
         except:
             raise NotImplementedError
 
-        if data is not None:
-            self.flags = data.relays[0].flags
-        else:
-            raise NotImplementedError
+        try:
+            if data is not None:
+                self.flags = data.relays[0].flags
+            else:
+                raise NotImplementedError
+        except IndexError as e:
+            raise NotImplementedError from e
 
     def check_status(self):