Issue when joining leagues

[castroflavio]

OS: Ubuntu 20.04.4
Desktop environment (for Linux): Gnome
Graphics card: Iris graphics540
Output of docker info:

Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Docker Buildx (Docker Inc., v0.10.0-docker)
  scan: Docker Scan (Docker Inc., v0.23.0)

Server:
 Containers: 9
  Running: 0
  Paused: 0
  Stopped: 9
 Images: 26
 Server Version: 20.10.23
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runtime.v1.linux runc io.containerd.runc.v2
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
 runc version: v1.1.2-0-ga916309
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: default
 Kernel Version: 5.4.0-144-generic
 Operating System: Ubuntu 20.04.4 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 31.25GiB
 Name: castro-server
 ID: OSY3:BR64:QDRI:CRBU:7KZJ:6ISK:64T6:WB7S:EYUW:TZYE:VQ62:T7Q7
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false
[output.log](https://github.com/pauleve/docker-mtgo/files/11469662/output.log)

[pauleve]

Maybe a duplicate of #171?

[pauleve]

Can you try again with ./run-mtgo --update?