fx

app.py

@@ -54,7 +54,7 @@ def get_timestamp_range():
     try:
         with engine.connect() as conn:
             result = conn.execute(text("SELECT MIN(timestamp) as min_ts, MAX(timestamp) as max_ts FROM gps_points")).fetchone()
-            return result["min_ts"], result["max_ts"]
+            return result[0], result[1]  # min_ts, max_ts
     except Exception as e:
         st.error(f"Error fetching timestamp range: {e}")
         return None, None
@@ -79,7 +79,8 @@ def load_gps_data(from_ts, to_ts):
             WHERE timestamp BETWEEN :from_ts AND :to_ts
             ORDER BY timestamp
         """)
-        df = pd.read_sql(query, engine, params={"from_ts": from_ts, "to_ts": to_ts})
+        with engine.connect() as conn:
+            df = pd.read_sql(query, conn, params={"from_ts": from_ts, "to_ts": to_ts})
         return df
     except Exception as e:
         st.error(f"Error loading GPS data: {e}")