Jitsi stable install, 747 prosody nightly, Ubuntu 18.04,

Install Ubuntu 18.04 LTS

apt-get update
apt-get upgrade
reboot

copy certificates to /etc/ssl to be used by jitsi-meet package insatall

wget -qO - https://download.jitsi.org/jitsi-key.gpg.key | sudo apt-key add -
sh -c "echo 'deb https://download.jitsi.org stable/' > /etc/apt/sources.list.d/jitsi-stable.list"
apt-get -y update
apt-get -y install jitsi-meet

wget https://packages.prosody.im/debian/pool/main/p/prosody-trunk/prosody-trunk_1nightly747-1~trusty_amd64.deb
dpkg -i prosody-trunk_1nightly747-1~trusty_amd64.deb

apt-get install libssl1.0-dev
apt-get install luarocks
luarocks install luacrypto

apt-get install jitsi-meet-tokens

luarocks install basexx
luarocks install luajwtjitsi

vi /usr/lib/prosody/modules/mod_posix.lua
edit line 123, remove format method that is causing error, so it becomes
                        syslog(level, name, message);

vi /etc/prosody/prosody.cfg.lua
Add to end:
c2s_require_encryption=false
Include "conf.d/*.cfg.lua"

edit /etc/prosody/conf.avail/host.domain.com.cfg.lua
set storage = "null" and enable token auth:
Virtual Host "host.domain.com"
  	...
	app_id="ApplicationName"
	app_secret="randomSecretHere"
	...

Component "conference.host.domain.com" "muc"
    storage = "null"
    modules_enabled = {
        "muc_meeting_id";
        "muc_domain_mapper";
        "token_verification";
    }

To prevent prosody error log loading key:
chmod 755 /etc/prosody/certs
chmod 644 /etc/prosody/certs/localhost.key

reboot

test jwt with token from https://jwt.io/
header
{
  "alg": "HS256",
  "typ": "JWT"
}
payload
{
  "context": {
    "user": {
      "name": "John Doe",
      "email": "jdoe@example.com"
    }
  },
  "aud": "ApplicationName",
  "iss": "IssuerName",
  "sub": "host.domain.com",
  "room": "RoomNameAllowed",
  "exp": 1595506000
}

set HMACSHA256 key as value of app_secret in prosody conf file

test with https://host.domain.com/RoomNameAllowed?jwt=......