In fact, neither bionic nor focal works now: $ j status Model Controller Cloud/Region Version SLA Timestamp default aws-eu-central-1 aws/eu-central-1 2.9.15 unsupported 16:47:44+03:00 App Version Status Scale Charm Store Channel Rev OS Message haproxy-bionic error 1 haproxy charmstore stable 63 ubuntu hook failed: "install" haproxy-focal error 1 haproxy charmstore stable 63 ubuntu hook failed: "install" Unit Workload Agent Machine Public address Ports Message haproxy-bionic/0* error idle 0 3.123.128.195 hook failed: "install" haproxy-focal/0* error idle 1 3.125.120.110 hook failed: "install" Machine State DNS Inst id Series AZ Message 0 started 3.123.128.195 i-04644b74485f1d622 bionic eu-central-1a running 1 started 3.125.120.110 i-01ef6ecc1a42b5f97 focal eu-central-1c running $ j debug-log -i haproxy-bionic/0 unit-haproxy-bionic-0: 16:47:30 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-bionic-0: 16:47:32 INFO unit.haproxy-bionic/0.juju-log Invoking charm-pre-install hooks unit-haproxy-bionic-0: 16:47:33 WARNING unit.haproxy-bionic/0.install E: Unable to locate package python2 unit-haproxy-bionic-0: 16:47:33 ERROR juju.worker.uniter.operation hook "install" (via explicit, bespoke hook script) failed: exit status 100 unit-haproxy-bionic-0: 16:47:33 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-bionic-0: 16:48:15 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-bionic-0: 16:48:17 INFO unit.haproxy-bionic/0.juju-log Invoking charm-pre-install hooks unit-haproxy-bionic-0: 16:48:17 WARNING unit.haproxy-bionic/0.install E: Unable to locate package python2 unit-haproxy-bionic-0: 16:48:18 ERROR juju.worker.uniter.operation hook "install" (via explicit, bespoke hook script) failed: exit status 100 unit-haproxy-bionic-0: 16:48:18 INFO juju.worker.uniter awaiting error resolution for "install" hook ^C $ j debug-log -i haproxy-focal/0 unit-haproxy-focal-0: 16:47:33 INFO unit.haproxy-focal/0.juju-log Invoking python-based install hook unit-haproxy-focal-0: 16:47:33 WARNING unit.haproxy-focal/0.install /var/lib/juju/agents/unit-haproxy-focal-0/charm/hooks/install: 25: python: not found unit-haproxy-focal-0: 16:47:33 ERROR juju.worker.uniter.operation hook "install" (via explicit, bespoke hook script) failed: exit status 127 unit-haproxy-focal-0: 16:47:33 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-focal-0: 16:48:10 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-focal-0: 16:48:12 INFO unit.haproxy-focal/0.juju-log Invoking charm-pre-install hooks unit-haproxy-focal-0: 16:48:13 INFO unit.haproxy-focal/0.juju-log Invoking python-based install hook unit-haproxy-focal-0: 16:48:13 WARNING unit.haproxy-focal/0.install /var/lib/juju/agents/unit-haproxy-focal-0/charm/hooks/install: 25: python: not found unit-haproxy-focal-0: 16:48:13 ERROR juju.worker.uniter.operation hook "install" (via explicit, bespoke hook script) failed: exit status 127 unit-haproxy-focal-0: 16:48:13 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-focal-0: 16:47:11 INFO unit.haproxy-focal/0.juju-log Invoking python-based install hook unit-haproxy-focal-0: 16:47:11 WARNING unit.haproxy-focal/0.install /var/lib/juju/agents/unit-haproxy-focal-0/charm/hooks/install: 25: python: not found unit-haproxy-focal-0: 16:47:11 ERROR juju.worker.uniter.operation hook "install" (via explicit, bespoke hook script) failed: exit status 127 unit-haproxy-focal-0: 16:47:11 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-focal-0: 16:47:30 INFO juju.worker.uniter awaiting error resolution for "install" hook unit-haproxy-focal-0: 16:47:32 INFO unit.haproxy-focal/0.juju-log Invoking charm-pre-install hooks ^C