Fix HTTPSConnectionPool error

[sayantan94]

Fix <error_item>VWAP Error: VWAP fetch failed: HTTPSConnectionPool(host='api.twelvedata.com', port=443): Max retries exceeded with url: /vwap?symbol=SPY&interval=5min&outputsize=1&apikey=6994c147e6984eb69cb1ee8326955cf1 (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x1139051f0>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known'))</error_item>