Exam environment troubles

Hello, everyone!
I tried to take the CKA exam and failed.
I think there was a problem with the environment. When I tried to update a node or restart a faulty node I got an error like “Unable to read /proc/cpuinfo transport not connected” and similar for /proc/meminfo. I haven’t encountered such errors before and I didn’t get them in KodeKloud courses.
Has anyone encountered such errors? How to deal with them? Is this a normal behavior or is it abnormal?
Thank you for the answers.

Translated with www.DeepL.com/Translator (free version)

Hello Winvan,

I’m sorry for hearing this news and hopefully, you will be able to pass the exam in the retake chance.
this error can be encountered if there is an error in installing the Kubelet or the container runtime.

Thanks,
KodeKloud Support