"Function not implemented" Android Pie

Followed instructions here https://wiki.termux.com/wiki/Debian
And got the below error

proot -0 -r ~/stable -b /dev/ -b /sys/ -b /proc/ -b /data/data/com.termux/files/home /usr/bin/env -i HOME=/root TERM="xterm-256color" PS1='[root@stable \W]$ ' PATH=/bin:/usr/bin:/sbin:/usr/sbin:/bin /bin/bash --login proot error: execve("/usr/bin/env"): Function not implemented proot info: possible causes: * the program is a script but its interpreter (eg. /bin/sh) was not found; * the program is an ELF but its interpreter (eg. ld-linux.so) was not found; * the program is a foreign binary but qemu was not specified; * qemu does not work correctly (if specified); * the loader was not found or doesn't work. fatal error: see proot --help. proot error: can't chmod '/data/data/com.termux/files/usr/tmp/proot-14527-qHm8hM': No such file or directoryproot error: can't chdir to '/data/data/com.termux/files/usr/tmp': No such file or directory

Reproduce the Debian setup on Android Pie using the exact proot command and examine the reported executable, interpreter, and temporary-directory paths. No source file or test is named; done means identifying the Android Pie cause and confirming the command completes without the reported execve, chmod, and chdir errors.