Existing Docker Document Service integrate to Docker Groups Same machine

[intersector]

Hello,
I m facing an issue with the addition of OnlyOffice Groups at my home server.
I was already running a Document Server (Cheers) , while I m trying to use the integration feature of Groups , i can not integrate with error "undefined".
I saw the docker logs of Document Service and appears that it tries to connect without jwt.
I used the same env like the example docker-compose.yml but it seems that are not recognized.
Thanks

[Carazyda]

Hello @intersector Please take a look at /var/www/onlyoffice/WebStudio/web.appsettings.config CommunityServer for those keys
<add key="files.docservice.secret" value="" />
<add key="files.docservice.secret.header" value="" />

and in /etc/onlyoffice/documentserver/local.json DocumentServer for those keys
"token": {
"inbox": { "header": "",
"outbox": { "header": "",
"secret": {
"inbox": { "string": ""
"outbox": { "string": ""
"session": { "string": ""
they must be the same.