Get devices of event sender Error 404

[foobar256]

Code snippet:

syncer.OnEventType(event.StateMember, func(source mautrix.EventSource, evt *event.Event) {
		if evt.Content.AsMember().Membership == event.MembershipJoin {
			fmt.Println(client.GetDeviceInfo(id.DeviceID(evt.Sender)))
		}
...

Output:
<nil> failed to GET /_matrix/client/r0/devices/@user:homeserver.tld: M_NOT_FOUND (HTTP 404): Not found

[tulir]

GetDeviceInfo gets your own device info and it takes a device ID (as the parameter type suggests), not a user ID.

QueryKeys is for fetching other users devices (https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3keysquery)