error:SSL certificate problem, verify that the CA cert is OK. Details:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
You’ll need to update the root certificate authority bundle on your server, to make sure that it is up to date and can validate the HubSpot SSL certificates. Exactly how you do this is going to vary based on your server configuration, so you may need to talk to whoever manages the server, but there are some general instructions for updating the CA bundle in these answers: