problem:


“macsign-1-0-2-for-ai-installer.pkg” can’t be opened because Apple cannot check it for malicious software."


You find a solution on the below apple support page:  https://support.apple.com/en-us/HT202491 scroll down till you find: "How to open an app that hasn’t been notarized or is from an unidentified developer


Check  the below apple support page:

https://support.apple.com/en-us/HT202491

scroll down till you find: "How to open an app that hasn’t been notarized or is from an unidentified developer"