To do so I have to update prices every x seconds in a different thread to not block the requests.

def coinUpdater():
    t = threading.currentThread()
    while getattr(t, "activator", True):
        coinUpdate()

# CoinUpdater thread
t = threading.Thread(target=coinUpdater)
t.start() 

coinUpdate() is where i get the prices from the api and access moongoDB.

However, whenever I go to my laptop I get this error:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "./main.py", line 51, in coinUpdater
    coinUpdate()
  File "./crypto.py", line 145, in coinUpdate
    data = db.coindata.find_one({"coinID":coinID})
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/collection.py", line 1419, in find_one
    for result in cursor.limit(-1):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/cursor.py", line 1248, in next
    if len(self.__data) or self._refresh():
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/cursor.py", line 1139, in _refresh
    self.__session = self.__collection.database.client._ensure_session()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1663, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1608, in __start_session
    self._topology._check_implicit_session_support()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/topology.py", line 519, in _check_implicit_session_support
    self._check_session_support()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/topology.py", line 535, in _check_session_support
    self._select_servers_loop(
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymongo/topology.py", line 227, in _select_servers_loop
    raise ServerSelectionTimeoutError(
pymongo.errors.ServerSelectionTimeoutError: marketdata01-shard-00-01.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123),marketdata01-shard-00-00.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123),marketdata01-shard-00-02.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123), Timeout: 30s, Topology Description: <TopologyDescription id: 629934c9d383a0aca75614de, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('marketdata01-shard-00-00.21jzd.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('marketdata01-shard-00-00.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)')>, <ServerDescription ('marketdata01-shard-00-01.21jzd.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('marketdata01-shard-00-01.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)')>, <ServerDescription ('marketdata01-shard-00-02.21jzd.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('marketdata01-shard-00-02.21jzd.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)')>]>

To “Fix it” I’ve tried using “certifi”

from pymongo import MongoClient
import certifi

client = MongoClient(connection_string, tlsCAFile=certifi.where())

And now the website shows in localhost but the process inside coinUpdate() which is to upload data to mongodb isn’t working.

DISCLAIMER

Sorry if there is something which is not clear, it’s my first question here. Thanks!