Update pre.py

pre.py

@@ -44,8 +44,8 @@ def preprocess_uploaded_file(uploaded_file):
     processed_file = io.StringIO(processed_output.getvalue())
     data = load_data(processed_file)
     data = fill_missing_data(data, 4, 0)
-    data['Start datetime'] = pd.to_datetime(data['Start datetime'], errors='coerce')
-    data['End datetime'] = pd.to_datetime(data['End datetime'], errors='coerce')
+    data['Start datetime'] = pd.to_datetime(data['Start datetime'], dayfirst=True, errors='coerce')
+    data['End datetime'] = pd.to_datetime(data['End datetime'], dayfirst=True, errors='coerce')
     data['Time spent'] = (data['End datetime'] - data['Start datetime']).dt.total_seconds()
     data['Time spent(m:s)'] = pd.to_datetime(data['Time spent'], unit='s').dt.strftime('%M:%S')
     return data