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. Iā€™d like to keep the setting on and Iā€™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