DigiCert CA Certificate: Error: unable to verify the first certificate

Hi,

I have certificates authorized by DigiCert, but when I try to call my SOAP services in Postman I receive:
Error: unable to verify the first certificate

Chrome seems to accept the cert and allows me to access the services with no issue. If I turn off SSL certificate verification, Postman will work fine. I’d like to keep the setting on and I’d like to know why Chrome works fine, but not the stand alone Postman.

Thank you!

Postman for Windows
Version 7.16.1
win32 10.0.17763 / x64