xUbuntu_20.10 x86_64 has no util-linux package

Hi, I cannot chroot to  xUbuntu_20.10 x86_64 : magix@opensuse:~/OBS/home:DenisRx:TeXmacs/TeXmacs> osc chroot xUbuntu_20.10 x86_64 chroot: failed to run command 'su': No such file or directory The chroot works on xUbuntu_20.10 i586. Regards, Denis