Ubuntu 24.04 has a stricter AppArmor policy that restricts unprivileged user namespaces by default, which may prevent the task-runner from working.
To fix this, run the following command:
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0
We recommend Ubuntu 22.04 LTS for better compatibility and stability. If using Ubuntu 24.04, apply the fix above.