How to resolve SSL error when access website which is using Hong Kong Post CA issued SSL cert?

When using Google Chrome to access, there are error message: "NET::ERR_CERT_AUTHORITY_INVALD"

Missing Cert on client machine:

Download:

https://www.digitalpolicy.gov.hk/en/our_work/digital_infrastructure/legal_framework/regulation/eto/doc/hk_post_root_3.zip

https://www.digitalpolicy.gov.hk/en/our_work/digital_infrastructure/legal_framework/regulation/eto/doc/hk_post_root_3_cross_signed_by_globalsign_car3.zip

https://www.digitalpolicy.gov.hk/en/our_work/digital_infrastructure/legal_framework/regulation/eto/doc/hk_post_e-cert_ssl_3-17.zip

You can use www.ssllab.com to check the website SSL cert's cert path to see any SSL cert is missing on your laptop.

Reference:

有關郵政署署長的披露紀錄-頁1 | 數字政策辦公室

How to resolve SSL error when access website which is using Hong Kong Post CA issued SSL cert?