diff --git a/server/src/functions/fetch_transient_data/lambda_function.py b/server/src/functions/fetch_transient_data/lambda_function.py
index 7407180..e37d3a8 100644
--- a/server/src/functions/fetch_transient_data/lambda_function.py
+++ b/server/src/functions/fetch_transient_data/lambda_function.py
@@ -177,7 +177,6 @@ def lambda_handler(event, context):
     with ThreadPoolExecutor() as executor:
         futures = [
             executor.submit(fetch_trains),
-            executor.submit(fetch_luas),
             executor.submit(fetch_buses)
         ]
         data = []
diff --git a/server/src/functions/return_transient_data/lambda_function.py b/server/src/functions/return_transient_data/lambda_function.py
index 82d1c7f..a09a188 100644
--- a/server/src/functions/return_transient_data/lambda_function.py
+++ b/server/src/functions/return_transient_data/lambda_function.py
@@ -97,7 +97,7 @@ def lambda_handler(event, context):
 
         return {
             'statusCode': 200,
-            'body': json.dumps(items_with_latest_timestamp)
+            'body': json.dumps(items_with_latest_timestamp, default=str)
         }
 
     except Exception as e: