Unable to create rooms via API client or Element

[Teox76]

Hello, I'm testing a local installation of dendrite but I got several errors by creating a room.
I'm using the latest docker image with SQLite db.
I created an admin user ("superadmin") with no issues.
Then by using the client_server API like this:

POST /_matrix/client/v3/createRoom HTTP/1.1
> Host: localhost:57111
> User-Agent: insomnia/2023.2.1
> Content-Type: application/json
> Authorization: Bearer Ib6iLpjhSfK5AWp-WbBX.....
> Accept: */*
> Content-Length: 228

| {
| 	"preset": "public_chat",
| 	"room_alias_name": "iliketoeat",
| 	"name": "I like to eat a lot",
| 	"topic": "For all eaters",
| 	"creation_content": {
|       "m.federate": false
|   }
| }

I get the following errors:

2023-06-06 15:34:50 time="2023-06-06T13:34:50.299838835Z" level=info msg="Creating new room" req.id=rpO3oIsRTBWK req.method=POST req.path=/_matrix/client/v3/createRoom roomID="!PviotZCtp2Wnjm9A:localhost" roomVersion=10 userID="@superadmin:localhost" user_id="@superadmin:localhost"
2023-06-06 15:34:50 time="2023-06-06T13:34:50.581039877Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$iKZq8dkZQSrgXs2NCzwHmlUiThRwhPl5iDoZZJ-byKw" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.power_levels
2023-06-06 15:34:50 time="2023-06-06T13:34:50.671856585Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$iKZq8dkZQSrgXs2NCzwHmlUiThRwhPl5iDoZZJ-byKw" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.power_levels
2023-06-06 15:34:50 time="2023-06-06T13:34:50.671938252Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$iKZq8dkZQSrgXs2NCzwHmlUiThRwhPl5iDoZZJ-byKw" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.power_levels
2023-06-06 15:34:50 time="2023-06-06T13:34:50.687456210Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$OnXSR1alDxY3U7gn4b7NnhQ_mlKtB0ohwzMnOdt17sI" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.join_rules
2023-06-06 15:34:50 time="2023-06-06T13:34:50.724681752Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$OnXSR1alDxY3U7gn4b7NnhQ_mlKtB0ohwzMnOdt17sI" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.join_rules
2023-06-06 15:34:50 time="2023-06-06T13:34:50.724741085Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$OnXSR1alDxY3U7gn4b7NnhQ_mlKtB0ohwzMnOdt17sI" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.join_rules
2023-06-06 15:34:50 time="2023-06-06T13:34:50.735695919Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$z0vFzei5qEps31T7X5RQ4jOxtzUgKEGF26yDCYvH1Jk" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.history_visibility
2023-06-06 15:34:50 time="2023-06-06T13:34:50.770047544Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$z0vFzei5qEps31T7X5RQ4jOxtzUgKEGF26yDCYvH1Jk" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.history_visibility
2023-06-06 15:34:50 time="2023-06-06T13:34:50.770100085Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$z0vFzei5qEps31T7X5RQ4jOxtzUgKEGF26yDCYvH1Jk" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.history_visibility
2023-06-06 15:34:50 time="2023-06-06T13:34:50.780417377Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$tBYfHQbhkeHsRjCKv0YaapJxExGiMPkNKeq_BwLE2SM" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.name
2023-06-06 15:34:50 time="2023-06-06T13:34:50.814966835Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$tBYfHQbhkeHsRjCKv0YaapJxExGiMPkNKeq_BwLE2SM" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.name
2023-06-06 15:34:50 time="2023-06-06T13:34:50.815020835Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$tBYfHQbhkeHsRjCKv0YaapJxExGiMPkNKeq_BwLE2SM" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.name
2023-06-06 15:34:50 time="2023-06-06T13:34:50.823910002Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$kb9XdV80u0uA5gbcyRHn-agvdENw-iwivhtqepRPDBA" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.topic
2023-06-06 15:34:50 time="2023-06-06T13:34:50.854555877Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$kb9XdV80u0uA5gbcyRHn-agvdENw-iwivhtqepRPDBA" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.topic
2023-06-06 15:34:50 time="2023-06-06T13:34:50.854603835Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$kb9XdV80u0uA5gbcyRHn-agvdENw-iwivhtqepRPDBA" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.topic
2023-06-06 15:34:50 time="2023-06-06T13:34:50.864564669Z" level=warning msg="Error authing soft-failed event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$03to1sKaepgICpFHYfvQa3UoNy822QpSwUCcbmZdfr0" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.canonical_alias
2023-06-06 15:34:50 time="2023-06-06T13:34:50.898565669Z" level=warning msg="Stored rejected event" context=missing error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$03to1sKaepgICpFHYfvQa3UoNy822QpSwUCcbmZdfr0" kind=KindNew origin=localhost room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.canonical_alias
2023-06-06 15:34:50 time="2023-06-06T13:34:50.898618127Z" level=warning msg="Roomserver rejected event" error="eventauth: sender \"@superadmin:localhost\" not in room" event_id="$03to1sKaepgICpFHYfvQa3UoNy822QpSwUCcbmZdfr0" room_id="!PviotZCtp2Wnjm9A:localhost" type=m.room.canonical_alias

This appens also by trying to create a room using the Element MacOs X client.
This is the config file I'm using:
https://gist.github.com/Teox76/26bce2686854393df34e79203669d4b7

Many thanks for any suggestions 🙏 !