App Outlet does not work on deepin 20

[lxwndr]

Describe the bug
When running the application (.AppImage and .deb) through the terminal, the following message is displayed:

[15244:0530/224206.009199:FATAL:setuid_sandbox_host.cc(157)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /opt/App Outlet/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap

I ran the following commands to resolve the issues:

sudo chown root '/opt/App Outlet/chrome-sandbox'
sudo chmod 4755 '/opt/App Outlet/chrome-sandbox'

But still, an error is displayed:

Desktop
deepin 20 BETA (based on debian Buster)

Additional context
In the previous version of the system (deepin 15.11), I remember using the application without any problems.

[lxwndr]

Solution:

sudo sysctl kernel.unprivileged_userns_clone=1