You are not logged in.
I've installed the AUR package quickviewer (https://aur.archlinux.org/packages/quickviewer).
I can use it to open .cbr files OK but when I try to open .cbz files the program opens but in the bottom left corner says:
"Image file not found. Can't be opened".
I've tried running from the command line and get the same results with no errors.
I can open the same .cbz files with okular OK.
Offline
You asked the same question in the AUR comments and here. Both is most probably wrong. File an upstream bug, i.e a github issue.
Offline