Fixes retrieval of vals to int

app/index.py

         station_name = request.form['station']
 
         db = get_db()
-        station_id = db.execute(
+        station_query_res = db.execute(
             'SELECT s_id FROM station WHERE nombre_empleado=?',
             (station_name,)
         ).fetchone()
+        if station_query_res is not None:
+            station_id = station_query_res[0]
         db.execute(
             'UPDATE station SET last_turn = last_turn + 1 WHERE s_id=?',
             (station_id,)
         )
-        turn = db.execute(
+        turn_query_res = db.execute(
             'SELECT last_turn FROM station WHERE s_id=?',
             (station_id,)
         ).fetchone()
+        if turn_query_res is not None:
+            turn = turn_query_res[0]
         db.execute(
             'INSERT INTO turno (cName, cEmail, turn, timeArrival, station)'
-            ' VALUES (?, ?, ?, ?)',
+            ' VALUES (?, ?, ?, ?, ?)',
             (cName, cEmail, turn, 'testin', station_id)
         )
         db.commit()