Common errors

Error	Cause	Resolution
`MANIFEST_MISSING`	No launch argument	Enable mock mode or start the game through Launcher
`MANIFEST_INVALID`	Invalid schema or fields	Validate JSON and the schema version
`AUTH_REJECTED`	Token or game_id mismatch	Do not reuse an old manifest
`READY_TIMEOUT`	The game did not report readiness	Check scene loading and the ReadyAsync call
`SOCKET_CLOSED`	Launcher stopped or the connection was lost	Pause gameplay and show a system connection state
`DUPLICATE_COMPLETE`	Completion was sent twice	Route all endings through one completion function