Hi there HyeonJung Park
Thanks for using QandA platform
Might be bcoz of missing certificate authorities. check the certificate for your Azure AI resource is valid and properly configured. If you're using a custom root certificate, import it into your system's trusted root certificate store. For Windows, you can use the Certificate Manager, and for Linux, add it to the appropriate trusted CA directory. Temporarily, you can bypass SSL verification in your development code by disabling certificate validation]
If this helps kindly accept the answer thanks much.