Minor bugs when creating a system

app/internal/db_wrappers.py

@@ -33,7 +33,7 @@ class SystemDbController():
         try:
             # Check if the data to be inserted has an ID
             if not system_data.get("_id"):
-                system_data['_id'] = uuid4()
+                system_data['_id'] = str(uuid4())
 
             inserted_result = None
             inserted_id = None

app/routers/systems.py

@@ -38,7 +38,7 @@ async def create_system_route():
 
         if created_system:
             print("Created new system:", created_system)
-            return jsonify(created_system), 201
+            return jsonify(created_system.to_dict()), 201
         else:
             abort(500, "Failed to create system in the database.")
     except HTTPException: