Domain has failed to start: 'NoneType' object has no attribute 'count'

[3o14r473]

Qubes OS version
R4.0

Affected component(s) or functionality
domU qube, Qube Manager qube settings and qvm-firewall.

Brief summary
Affected domU qube fails to start. It is no longer possible to edit or list the firewall rules of this qube via qvm-firewall and it is not possible to open the qube settings (Qube Manager) for this qube.

To Reproduce
Add a firewall rule to $qube which specifies the destination host as empty via qvm-firewall,
e.g. qvm-firewall $qube add accept dsthost=, and then reboot Qubes.

Expected behavior
qvm-firewall refusing to create this rule.

Actual behavior
qvm-firewall creating the rule.

Additional context
The Qube Manager prevents the user from creating such a firewall rule.

After the qube fails to start, a notification displays this message:

Qube Status: $qube
Domain $qube has failed to start: 'NoneType' object has no attribute 'count'

Solutions you've tried
Delete the rules that prevent the affected qube from starting by directly editing /var/lib/qubes/appvms/$qube/firewall.xml in dom0. This solves all issues described in the brief summary above.

Relevant documentation you've consulted
https://qubes-os.org/doc/firewall

[qubesos-bot]

Automated announcement from builder-github

The package python3-qubesadmin-4.1.7-1.fc32 has been pushed to the r4.1 testing repository for dom0.
To test this update, please install it with the following command:

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package qubes-core-admin-client_4.1.7-1 has been pushed to the r4.1 testing repository for the Debian template.
To test this update, first enable the testing repository in /etc/apt/sources.list.d/qubes-*.list by uncommenting the line containing stretch-testing (or appropriate equivalent for your template version), then use the standard update command:

sudo apt-get update && sudo apt-get dist-upgrade

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package python3-qubesadmin-4.1.9-1.fc32 has been pushed to the r4.1 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package You has been pushed to the r4.0 testing repository for the Debian template.
To test this update, first enable the testing repository in /etc/apt/sources.list.d/qubes-*.list by uncommenting the line containing stretch-testing (or appropriate equivalent for your template version), then use the standard update command:

sudo apt-get update && sudo apt-get dist-upgrade

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package core-admin-client has been pushed to the r4.0 testing repository for the CentOS centos7 template.
To test this update, please install it with the following command:

sudo yum update --enablerepo=qubes-vm-r4.0-current-testing

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package python2-qubesadmin-4.0.32-1.fc25 has been pushed to the r4.0 stable repository for dom0.
To install this update, please use the standard update command:

sudo qubes-dom0-update

Or update dom0 via Qubes Manager.

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package core-admin-client has been pushed to the r4.0 stable repository for the CentOS centos8 template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The package qubes-core-admin-client_4.0.32-1+deb10u1 has been pushed to the r4.0 stable repository for the Debian template.
To install this update, please use the standard update command:

sudo apt-get update && sudo apt-get dist-upgrade

Changes included in this update

[qubesos-bot]

Automated announcement from builder-github

The component core-admin-client (including package python2-qubesadmin-4.0.32-1.fc32) has been pushed to the r4.0 stable repository for the Fedora template.
To install this update, please use the standard update command:

sudo yum update

Changes included in this update