Unable to run anbox on Ubuntu 20.04

I'm able to install anbox using snap. Checking the computer specs seems OK:

vitor@vitor-Inspiron-5379:~$ anbox check-features
Your computer does meet all requirements to run Anbox

However running it fails:

vitor@vitor-Inspiron-5379:~$ anbox session-manager
[ 2021-02-09 21:30:08] [session_manager.cpp:133@operator()] Failed to start as either binder or ashmem kernel drivers are not loaded

My first guess it would be related to SecureBoot being enabled, but I can't find the modules to sign:

vitor@vitor-Inspiron-5379:~$ find /lib/modules | grep ashmen
vitor@vitor-Inspiron-5379:~$

vitor@vitor-Inspiron-5379:~$ find /snap/anbox/ | grep ko
/snap/anbox/186/etc/apparmor.d/abstractions/ubuntu-konsole
/snap/anbox/186/usr/lib/python3.5/encodings/koi8_r.py
/snap/anbox/186/usr/lib/python3.5/encodings/koi8_t.py
/snap/anbox/186/usr/lib/python3.5/encodings/koi8_u.py
vitor@vitor-Inspiron-5379:~$

I found other people with the same isue:

https://askubuntu.com/questions/1286667/anbox-on-ubuntu-20-04

Running as root does not help:

vitor@vitor-Inspiron-5379:~$ sudo su -
[sudo] password for vitor:
root@vitor-Inspiron-5379:~# anbox session-manager
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
[ 2021-02-09 21:32:31] [session_manager.cpp:133@operator()] Failed to start as either binder or ashmem kernel drivers are not loaded
root@vitor-Inspiron-5379:~#

Those were the instructions I was trying to follow:

https://askubuntu.com/questions/1267823/module-ashmem-doesnt-load-with-secure-boot-on-but-binder-does-load-with-se