Update app.py

app.py

@@ -75,8 +75,20 @@ def fetch_issue_details(issue_url):
 # Function to clean and structure the data
 def clean_and_structure_data(issues_data):
     df = pd.DataFrame(issues_data)
-    df['created_at'] = pd.to_datetime(df['created_at'])
-    df['closed_at'] = pd.to_datetime(df['closed_at'])
+    
+    # Check if 'created_at' column exists
+    if 'created_at' in df.columns:
+        df['created_at'] = pd.to_datetime(df['created_at'])
+    else:
+        logging.error("The 'created_at' column is missing from the dataframe.")
+        df['created_at'] = pd.NaT  # or use pd.to_datetime('now') for current time
+    
+    # Check if 'closed_at' column exists
+    if 'closed_at' in df.columns:
+        df['closed_at'] = pd.to_datetime(df['closed_at'])
+    else:
+        df['closed_at'] = pd.NaT
+    
     df['resolution_time'] = (df['closed_at'] - df['created_at']).dt.days
     df['resolution_time'] = df['resolution_time'].fillna(-1)
     df['is_closed'] = (df['closed_at'].notna()).astype(int)