Installation Problem: [title]

[ioricloud]

Which operating system are you using:
debian jessie

Please describe the steps you took when trying to install Yarn and what went wrong:
I updated my apt list and error for yarn gpg keys
stdin: gpg /etc/apt/trusted.gpg
stout: uid Yarn Packaging yarn@dan.cx
sub rsa4096 2016-10-05 [E]
sub rsa4096 2016-10-05 [S] [expired: 2017-10-05]
sub rsa4096 2016-10-30 [S] [expired: 2019-01-01]
sub rsa4096 2017-09-10 [S] [expired: 2019-01-01]

apt update: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.yarnpkg.com/debian stable InRelease: As seguintes assinaturas eram inválidas: EXPKEYSIG E074D16EB6FF4DE3 Yarn Packaging yarn@dan.cx

[robinst]

@ioricloud This is a duplicate of #6865

[ioricloud]

thanks @robinst