Using Newman CLI to run a Postman collection and I’m getting the following errors:

error: collection could not be loaded
  unable to fetch data from url "https://api.postman.com/collections/<collection URL>"
  unable to get local issuer certificate

Notes:

1. I’m on a cooperate computer using Zscaler.
2. The collection points to a publicly available Trello API.
3. running https://api.postman.com/collections/<collection URL>?apikey=<API key> works in Postman
4. running curl https://api.postman.com/collections/<collection URL>?apikey=<API key> works in cmd

I’m using the following command to run my collection:
newman run https://api.postman.com/collections/<collection URL>?apikey=<API key>

I’ve tried:

1. --insecure
2. --ssl-extra-ca-certs <Local file path to SSL cert>
3. --ssl-client-cert <Local file path to SSL cert>
4. SET NODE_EXTRA_CA_CERTS=<Local file path to SSL cert> & then using NODE_EXTRA_CA_CERTS after the previous 2 examples instead of the file path (with and without quotes)
5. npm config set strict-ssl false

Same response each time.