BunsenLabs (Debian derrivative) won't shut down (Failed to start poweroff.target: Transaction is destructive)

I stumbled upon a weird behaviour of my BunsenLabs GNU/Linux (which is based on Debian). Sometimes I cannot turn off the OS. I doesn't matter whether I use sudo poweroff or the GUI approach. This is what I get after running sudo poweroff: > Failed to start poweroff.target: Transaction is destructive Is there a workaround? Why is it happening? --- Here is the content of my /lib/udev/rules.d/70-power-switch.rules: ACTION=="remove", GOTO="power_switch_end" SUBSYSTEM=="input", KERNEL=="event*", SUBSYSTEMS=="acpi", TAG+="power-switch" SUBSYSTEM=="input", KERNEL=="event*", KERNELS=="thinkpad_acpi", TAG+="power-switch" LABEL="power_switch_end"