5

How can I fix this error with update:

Err:26 https://storage.googleapis.com/download.dartlang.org/linux/debian stable Release.gpg
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E88979FB9B30ACF2
<omitted>
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://storage.googleapis.com/download.dartlang.org/linux/debian stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E88979FB9B30ACF2
W: Failed to fetch https://storage.googleapis.com/download.dartlang.org/linux/debian/dists/stable/Release.gpg  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E88979FB9B30ACF2
W: Some index files failed to download. They have been ignored, or old ones used instead.
R A
  • 927

2 Answers2

13
 wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo gpg  --dearmor -o /usr/share/keyrings/dart.gpg

This downloads key and put it under /usr/share/keyrings/. Remove the old sources.list for thise repo under /etc/apt/sources.list.d/

echo 'deb [signed-by=/usr/share/keyrings/dart.gpg arch=amd64] https://storage.googleapis.com/download.dartlang.org/linux/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list

This creates the new one and try again.

nobody
  • 5,792
11

If these errors aren’t fixed, apt will have problems when installing or upgrading packages. The apt packaging system has a set of trusted keys that determine whether a package can be authenticated and therefore trusted to be installed on the system. There is a quick fix.

Looking at the error above, apt is telling us that the following key is missing: E88979FB9B30ACF2 To add these key, run the following command:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E88979FB9B30ACF2

If the key that your system is missing differs, simply replace the key at the end of the above command with your key and run it.

Mr.e.z
  • 111