The key is this one line: unable to build chain to self-signed root
It means there is a problem with the Apple developer root certificate.
Under Keychain – System, there must be one and only one “Apple Worldwide Developer Relations Certificate Authority”.
If you cannot see it, check whether the category in the bottom-left corner is selected as “All Items”. If an old one is there, delete it.
Then click here to download the latest Apple developer root certificate:
https://www.apple.com/certificateauthority/AppleWWDRCAG3.cer
After downloading, double-click to import it; when prompted for a password, enter the current user’s password.
Once the certificate is installed successfully, build again and everything is back to normal!