Error: TIOCGPTPEER required but not available linux | lxc [closed]

I am getting Error: TIOCGPTPEER required but not available when I execute lxc exec container bash.

I am using debian9 stretch

root@test-api:~# uname -aLinux test-api 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1+deb9u1 (2020-06-07) x86_64 GNU/Linux

root@test-api:~# lxc exec w1 bashError: TIOCGPTPEER required but not available