goormIDE 우분투 apt-get update 오류

1.

다음 서명들은 공개키가 없기 때문에 인증할 수 없습니다

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cli-assets.heroku.
com/apt ./ InRelease: 다음 서명들은 공개키가 없기 때문에 인증할 수 없습니다: NO_PUBKEY 536F8F1DE80F6A35

 

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys [key 입력]

 

2. W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cf-cli-debian-repo
.s3.amazonaws.com stable InRelease: 다음 서명이 올바르지 않습니다: EXPKEYSIG 172B5989FCD21EF8 CF CLI Team <cf-cli-eng@pivotal.io>
W: http://packages.cloudfoundry.org/debian/dists/stable/InRelease 파일을 받는데 실패했습니다  다음 서명이 올바르지 않습니다: EXPKEYSIG 172B5989FCD21EF8 CF CLI Team <c
f-cli-eng@pivotal.io>

 

wget -q -O - https://packages.cloudfoundry.org/debian/cli.cloudfoundry.org.key | apt-key add -