Failed to load meta-packages list: [Errno 12] Unable to allocate memory

Question

I use the free AWS level.
I encountered the error message "Failed to load the list of meta-packages: [Errno 12] Unable to allocate memory" after the apt-get update error with the message "fatal → failed for for fork".
Does anyone know why I received these messages and how to solve the problem.
Thank.

Failed to load meta-packages list: [Errno 12] Unable to allocate memory

Answer 1

Actually, this invitation was written in a file

/var/lib/ubuntu-release-upgrader/release-upgrade-available

so delete it and the error message will disappear. This file was created.

/usr/lib/ubuntu-release-upgrader/release-upgrade-motd

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