JWT validation failed: Issuer not allowed

Hello,
Using a postman collection received from combo curve to get the capex documents for a project. Put in the credentials we’ve been using to get data for other endpoints but getting a JWT validation error. Can I get help with this please?

The demo scripts that we sent should have had both the postman collection and environment. Please ensure that the environment has the following variables set to the values from your api credentials: privateKey, clientEmail, baseUrl, apiKey

Thank you. ClientEmail needed to be fixed.