Unable to install flex - There were many errors:Err:1 http://archive.ubuntu.com/ubuntu jammy/main amd64 m4 amd64 1.4.18-5ubuntu2Temporary failure resolving 'archive.ubuntu.com'E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/m/m4/m4_1.4.18-5ubuntu2_amd64.deb Temporary failure resolving 'archive.ubuntu.com'
E: Internal Error, ordering was unable to handle the media swap.