No output anymore

For some reason I'm not getting any output anymore when running 'sudo prometheus-vcgencmd' on my Raspberry Pi4.

It used to work, I think it has installed new kernel headers:

Linux docker 5.10.103-v8+ #1529 SMP PREEMPT Tue Mar 8 12:26:46 GMT 2022 aarch64 GNU/Linux

/var/log/messages doesn't show any output, so if you need anything else Please let me know.