I just experienced this same issue. In my case, the problem was that I didn't properly install the chroot.
I used debootstrap to build the chroot directory, but I accidentally specified a different directory than what I put in my chroot configuration file (/etc/schroot/schroot.conf). As a result, the path that chroot was mounting did not have an etc directory in it.
When I changed /etc/schroot/schroot.conf to point to the correct path, everything worked correctly.
I just experienced this same issue. In my case, the problem was that I didn't properly install the chroot.
I used debootstrap to build the chroot directory, but I accidentally specified a different directory than what I put in my chroot configuration file (/etc/schroot/ schroot. conf). As a result, the path that chroot was mounting did not have an etc directory in it.
When I changed /etc/schroot/ schroot. conf to point to the correct path, everything worked correctly.