我正在尝试sudo apt-get update
在鹦鹉操作系统中做一个,但我得到的只是这个错误
Err:1 http://your.repo.domain/repository JollyRoger InRelease
Could not resolve 'your.repo.domain'
Ign:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://dl.google.com/linux/chrome/deb stable Release
Hit:4 http://deb.playonlinux.com wheezy InRelease
Get:5 http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease [14.6 kB]
Err:5 http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED05F7B2EC3C9224
Reading package lists... Done
W: GPG error: http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ED05F7B2EC3C9224
E: The repository 'http://mirrordirector.archive.parrotsec.org/parrot parrot InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
我怎样才能永久修复它?