This is a duplicate of bug 1813354 because we can see in VarLogDistupgradeMainlog.txt your sources.list entry contained entries like 'deb mirror://mirrors.ubuntu.com/mirrors' for the eoan release of Ubuntu. Bug 1813354 is about those entries being unsupported.
This is a duplicate of bug 1813354 because we can see in VarLogDistupgra deMainlog. txt your sources.list entry contained entries like 'deb mirror: //mirrors. ubuntu. com/mirrors' for the eoan release of Ubuntu. Bug 1813354 is about those entries being unsupported.