Custom scene graph interactable component is causing session to fail to load

I was able to find the Fortnite logs.

FortniteGame.log (2.4 MB)

[2025.07.22-20.02.46:770][181]LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = ConnectionTimeout, ErrorString = UNetConnection::Tick: Connection TIMED OUT. Closing connection.. Elapsed: 60.02, Real: 60.02, Good: 60.02, DriverTime: 60.05, Threshold: 60.00, [UNetConnection] RemoteAddr: 4.155.27.146:15016, Name: IpConnection_2147482646, Driver: Name:IpNetDriver_2147482646 Def:BeaconNetDriver IpNetDriver_2147482646, IsServer: NO, PC: NULL, Owner: NULL, UniqueId: MCP:006c30d95e9d426ba48a9a3995128e03, Driver = Name:IpNetDriver_2147482646 Def:BeaconNetDriver IpNetDriver_2147482646
[2025.07.22-20.02.46:770][181]LogBeacon: Verbose: NetworkFailure FortPartyBeaconClient_2147482646: ConnectionTimeout
[2025.07.22-20.02.46:770][181]LogBeacon: Verbose: Client beacon (FortPartyBeaconClient_2147482646) connection failure, handling connection timeout.
[2025.07.22-20.02.46:770][181]LogParty: Verbose: Host connection failed for reservation beacon [FortPartyBeaconClient_2147482646], session id [afd1b8acff2441079013f25a5a33aefc]
[2025.07.22-20.02.46:770][181]LogParty: Verbose: Party reservation beacon cleanup while in state Invalid, pending approvals: false
[2025.07.22-20.02.46:770][181]LogBeacon: Verbose: Destroying beacon FortPartyBeaconClient_2147482646, netdriver Name:IpNetDriver_2147482646 Def:BeaconNetDriver IpNetDriver_2147482646
[2025.07.22-20.02.46:770][181]LogBeacon: OnlineBeacon FortPartyBeaconClient_2147482646 requesting net driver destruction: Name:IpNetDriver_2147482646 Def:BeaconNetDriver IpNetDriver_2147482646
[2025.07.22-20.02.46:770][181]LogNet: SetPendingDestruction: 1 on Name:IpNetDriver_2147482646 Def:BeaconNetDriver IpNetDriver_2147482646)
[2025.07.22-20.02.46:770][181]MatchmakingLog: Error: [31ba] Failed to connect to reservation beacon due to CustomReason17 (ReservedSessionId afd1b8acff2441079013f25a5a33aefc)
[2025.07.22-20.02.46:772][181]MatchmakingLog: [2d14] 
Matchmaking Flow Summary: 

UEFN Session - 1m 1s 417ms
[Reserve Position Within Existing Session] - Failed Failed to connect to reservation beacon due to CustomReason17 (ReservedSessionId afd1b8acff2441079013f25a5a33aefc)

Parameters:
	Island: 
	MatchmakingGroup:
		NanoStormy (Local) - Ready
	Metadata:
		LinkId [Mnemonic=[playlist_vk_edit] Version=[latest]] 
		WorldId [World [None] WorldName [None] WorldOwnerId [INVALID] IsJoinable [Unjoinable]] 
		ProductModes [None] 
		SessionId [Session Id [afd1b8acff2441079013f25a5a33aefc] Join Info [IslandJoinability [EditSession] SessionKey [None]]] 
		Privacy [NoFill] 
		Region [NAW] 
		MatchmakingId [D5D07B5D487CB63A6B35D789E0A7EF4E]
	UnrankedSet [Invalid],
	UnrankedIslands [Mnemonic=[playlist_vk_edit] Version=[95]],
	UnrankedFallback [Invalid],
	RankedSet [Invalid],
	RankedIslands [Empty],
	RankedFallback [Invalid],
	bGracefullyUpgraded [False],
	PlaylistName [Playlist_VK_Edit]
	Party Leader (Local): NanoStormy

Steps:
	Matchmaking Begin - Immediate - Success:
	Hidden Delay - Immediate - Success:
		No member uses the 'Matchmaking Delay' setting, continuing...
	Refresh DAD - 171ms - Success:
		No non local players to wait for, final playlist version 1
	Refresh MCP Profiles - 244ms - Success:
	Validity Checks - Immediate - Success:
	Preload Athena - 18ms - Success:
		Starting athena preload
		Athena preload completed successfully
	QosUpdate - 106ms - Success:
	Anticheat - 253ms - Success:
	Keychain Update - Immediate - Success:
	Install Game Features - Immediate - Success:
	Clear Caches - Immediate - Success:
	Clean Up Old Sessions - Immediate - Success:
		No Session Found When Cleaning Up Old Sessions
	Clean Up Old Console Sessions - 1ms - Success:
		Not on Console So No Need To Clean Up Old Conslole Sessions
	Request Reservation - Immediate - Success:
		Joining existing session. SessionId [SessionId: afd1b8acff2441079013f25a5a33aefc]
	Request Moderator Permissions - 203ms - Success:
	Wait For World Session - Immediate - Success:
		No world set
	Find World Session - Immediate - Success:
		No world set
	Request World Token - Immediate - Success:
		No world token required
	Call Matchmaking Service - Immediate - Success:
		Joinable session so no need to request a session.
	Find Session - 196ms - Success:
		Succesfully Found Session [Id: afd1b8acff2441079013f25a5a33aefc]. Local user number: 0. Ping: 9999ms
	Query Session Encryption Key - 100ms - Success:
		Querying encryption key for NanoStormy (Primary player) with Id: MCP:006c30d95e9d426ba48a9a3995128e03
	Query User Session ID Tokens - 100ms - Success:
	Reserve Position Within Existing Session - 1m 25ms - Failed:
		Proceeding with reservation for EJoinInProgressRole::Host.
		Failed to connect to reservation beacon due to CustomReason17 (ReservedSessionId afd1b8acff2441079013f25a5a33aefc)
	Refresh Auth Tokens - Immediate - NotExecuted:
	Join Session - Immediate - NotExecuted:
	Download Content - Immediate - NotExecuted:
	Wait For Server Initialization - Immediate - NotExecuted:
	Wait For Non Local Party Members Before Travel - Immediate - NotExecuted:
	Wait For Travel Animation To Complete - Immediate - NotExecuted:
	Loading Screen - Immediate - NotExecuted:
	Travel To Session - Immediate - NotExecuted: