Catch HTTP errors

monitor.py

@@ -159,6 +159,7 @@ def print_trip(trip: dict) -> None:
 
 def get_next_refresh(data: dict):
     times = []
+    if data is not None:
         for trip in data['departureData']:
             times.append(trip['orgFullTime'])
             times.append(trip['fullTime'])
@@ -198,6 +199,7 @@ def _make_status_value_for_sql(trip: dict) -> str:
 
 
 def update(station_id: int):
+    try:
         reply_data = get_data(
             make_request_data(
                 station_id,
@@ -205,6 +207,10 @@ def update(station_id: int):
                 lines=lines_filter
             )
         )
+    except requests.exceptions.HTTPError as e:
+        print("Could not get the data: " + str(e))
+        return None
+
     for trip in reply_data['departureData']:
         print_trip(trip)
     return reply_data
@@ -220,6 +226,7 @@ def wait(cxn: mysql.connector.MySQLConnection, station_id: int):
     cur = cxn.cursor()
     while True:
         data = update(station_id)
+        if data is not None:
             for t in data['departureData']:
                 cur.execute('REPLACE INTO vrr '
                             '(line_code, direction_code, station_id, orig_datetime, status, delay_value)'