How to configure lvm from dracut emergency shell?

I am sorry if this is a silly question or someone has already answered it.

I am new to linux and encounter a problem with booting into OS (Qubes OS 4.0.1). After some time searching about the problem, I found a possible solution (comment by notbyosmosis). However, in the guide they said to modify lvm config file.

After I typed "/etc/lvm/lvm.conf" I got the following message:

I didn't manage to find information on how to get the permission. All the suggestions I've found require to do everything from os.

Is there a chance to get the permission without reinstalling the os?

OS partition is encrypted if it's matter.

Thank you in advance!