N: Updating from such a repository can't be done securely, and is therefore disabled by default. W: GPG error: focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654Į: The repository ' focal InRelease' is not signed. The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654 Gpg: keyserver receive failed: No sudo apt clean & sudo apt update Gpg: keyserver receive failed: No sudo ntpdate ) but i keep getting the same error constantly I have tried the solutions provided above but did not improve anything I am using ubuntu in a virtual machine on sudo apt-key del sudo -E apt-key adv -keyserver 'hkp://:80' -recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654Įxecuting: /tmp/apt-key-gpghome.6cydgLlBka/gpg.1.sh -keyserver hkp://:80 -recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654 Hi I am new to ros and trying to follow a ros2 installation tutorial form this YouTube video (. If it isn't, notify the author or maintainer of the tutorial or website so it can be updated. Installation tutorials are in the process of being updated, so if you're following one and you are seeing key-related errors, check that the tutorial is using the correct key. You should receive no errors and subsequent sudo apt install commands should also now work. If this results in errors (similar to "gpg: keyserver receive failed: End of file" or others indicating the key server could not be reached), an alternative would be (make sure curl is installed): curl -s | sudo apt-key add -Īt this point make sure to run sudo apt clean & sudo apt update. This command should work on all versions of Ubuntu: # add the new key On Ubuntu 15.10 and older (ie: 14.04, from here): sudo apt-key del B01FA116 Refer to New GPG keys deployed for for the full write-up, but as a summary these are the commands for Ubuntu (and Debian): The keys have also changed for the ROS 2 repositories, see: Key rotation for ROS 2 apt repositories. The key has been updated and the old one is no longer valid, causing the issues with apt update and apt install. The old key has been revoked as part of the measures to deal with a recent security incident with ( Security issue on ROS build farm). This completely prevents me from installing ROS (and related) packages. While running sudo apt install I see the following error: WARNING: The following packages cannot be authenticated! Īnd also sometimes (just an example, could be any package or ROS version): E: Failed to fetch 404 Not Found They have been ignored, or old ones used instead. While running sudo apt update I see the following error: W: GPG error: InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5523BAEEB01FA116Īnd or: W: Failed to fetch The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F42ED6FBAB17C654 var/cache/apt/archives/base-files_10.3+rpi1+deb10u4_armhf.When trying to install packages, I'm seeing errors similar to the following: Err:1 /main amd64 amd64 0.13.3-0xenial-20190320-132757-0800 ) from exĭpkg-deb: error: tar subprocess was killed by signal (Segmentation fault)ĭpkg: error processing archive /var/cache/apt/archives/base-files_10.3+rpi1+deb10u4_b (-unpack):ĭpkg-deb -control subprocess returned error exit status 2Įrrors were encountered while processing: Subprocess.CalledProcessError: Command '' returned non-zero exit status 2.ĭuring handling of the above exception, another exception occurred:įile "/usr/bin/apt-listchanges", line 281, in įile "/usr/bin/apt-listchanges", line 96, in mainįile "/usr/share/apt-listchanges/DebianFiles.py", line 215, in _init_įile "/usr/share/apt-listchanges/DebianFiles.py", line 128, in readdeb Output = subprocess.check_output(command)įile "/usr/lib/python3.7/subprocess.py", line 395, in check_outputįile "/usr/lib/python3.7/subprocess.py", line 487, in run Code: Select all dpkg-deb: error: tar subprocess was killed by signal (Segmentation fault)įile "/usr/share/apt-listchanges/DebianFiles.py", line 124, in readdeb
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