Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/cache@v4, actions/checkout@v4, actions/setup-dotnet@v4, actions/setup-node@v4. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Possible null reference argument for parameter 'RotatorId' in 'RotatorPositionEvent.RotatorPositionEvent(string RotatorId, double CurrentAzimuth, bool IsMoving, double? TargetAzimuth = null)'.

Possible null reference argument for parameter 'RotatorId' in 'RotatorPositionEvent.RotatorPositionEvent(string RotatorId, double CurrentAzimuth, bool IsMoving, double? TargetAzimuth = null)'.

Possible null reference argument for parameter 'host' in 'ValueTask TcpClient.ConnectAsync(string host, int port, CancellationToken cancellationToken)'.

Possible null reference argument for parameter 'host' in 'ClusterConnectionHandler.ClusterConnectionHandler(string id, string name, string host, int port, string callsign, string? password, bool autoReconnect, bool filterSkimmer, bool filterFt8, ILogger logger, Func<ParsedSpot, string, string, Task> onSpotReceived, Action<string, string, string, string?> onStatusChanged)'.

Possible null reference argument for parameter 'key' in 'bool ConcurrentDictionary<string, ClusterConnectionHandler>.ContainsKey(string key)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'myCallsign' in 'List<object> AiService.BuildChatMessages(string myCallsign, string theirCallsign, List<PreviousQsoSummary> previousQsos, QrzProfileSummary? qrzProfile, string question, List<ChatMessage>? conversationHistory)'.

Possible null reference argument for parameter 'myCallsign' in 'List<object> AiService.BuildChatMessages(string myCallsign, string theirCallsign, List<PreviousQsoSummary> previousQsos, QrzProfileSummary? qrzProfile, string question, List<ChatMessage>? conversationHistory)'.