Fix append in getAllMembers function

group.py

@@ -23,19 +23,22 @@ class Group:
                 else:
                     self.members.append(admidio.getMemberFromID(row[0]))
             except MemberNotFoundException:
-                print(
-                    f"Member with id {row[0]} not found, group id: {self.id}")
+                print(f"Member with id {row[0]} not found, group id: {self.id}")
 
     def __eq__(self, other):
         if isinstance(other, Group):
             return self.hash() == other.hash()
 
     def hash(self):
-        return hashlib.md5((str(self.id) + self.name
-                            + (''.join(str(x) for x in self.members) or '')
-                            + (''.join(str(x) for x in self.leaders) or '')
-                            ).encode('utf-8')).hexdigest()
+        return hashlib.md5(
+            (
+                str(self.id)
+                + self.name
+                + ("".join(str(x) for x in self.members) or "")
+                + ("".join(str(x) for x in self.leaders) or "")
+            ).encode("utf-8")
+        ).hexdigest()
 
     def getAllMembers(self):
         """Return leaders and members in group, combined"""
-        return self.leaders.append(self.members)
+        return self.leaders + self.members