Did not expect any exception, but found OpenSearch.Net.UnexpectedOpenSearchClientException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Tests.Reproduce.GitHubIssue5363.<>c.<DiagnosticListener_AuditTrailIsValid>b__1_0(IApiCallDetails data) in /home/runner/work/opensearch-net/opensearch-net/tests/Tests.Reproduce/GitHubIssue5363.cs:line 81 at Tests.Reproduce.GitHubIssue5363.TestDiagnosticListener.<OnNext>b__9_1(KeyValuePair`2 v) in /home/runner/work/opensearch-net/opensearch-net/tests/Tests.Reproduce/GitHubIssue5363.cs:line 56 at OpenSearch.Net.Diagnostics.TypedDiagnosticObserverBase`2.System.IObserver<System.Collections.Generic.KeyValuePair<System.String,System.Object>>.OnNext(KeyValuePair`2 value) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Diagnostics/TypedDiagnosticObserverBase.cs:line 93 at System.Diagnostics.DiagnosticListener.Write(String name, Object value) at System.Diagnostics.DiagnosticSource.StopActivity(Activity activity, Object args) at OpenSearch.Net.Diagnostics.Diagnostic`2.Dispose() in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Diagnostics/Diagnostic.cs:line 76 at OpenSearch.Net.RequestPipeline.Ping(Node node) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Transport/Pipeline/RequestPipeline.cs:line 420 at OpenSearch.Net.Transport`1.Ping(IRequestPipeline pipeline, Node node) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Transport/Transport.cs:line 260 at OpenSearch.Net.Transport`1.Request[TResponse](HttpMethod method, String path, PostData data, IRequestParameters requestParameters) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Transport/Transport.cs:line 100 --- End of inner exception stack trace --- at OpenSearch.Net.Transport`1.Request[TResponse](HttpMethod method, String path, PostData data, IRequestParameters requestParameters) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/Transport/Transport.cs:line 119 at OpenSearch.Net.OpenSearchLowLevelClient.DoRequest[TResponse](HttpMethod method, String path, PostData data, IRequestParameters requestParameters) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Net/OpenSearchLowLevelClient.cs:line 96 at OpenSearch.Client.OpenSearchClient.DoRequest[TRequest,TResponse](TRequest request, IRequestParameters parameters, Func`2 bodySelector, Action`1 forceConfiguration) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Client/OpenSearchClient.cs:line 193 at OpenSearch.Client.OpenSearchClient.DoRequest[TRequest,TResponse](TRequest request, IRequestParameters parameters, Action`1 forceConfiguration) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Client/OpenSearchClient.cs:line 171 at OpenSearch.Client.NamespacedClientProxy.DoRequest[TRequest,TResponse](TRequest request, IRequestParameters parameters, Action`1 forceConfiguration) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Client/OpenSearchClient.cs:line 50 at OpenSearch.Client.Specification.SnapshotApi.SnapshotNamespace.Get(IGetSnapshotRequest request) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Client/OpenSearchClient.Snapshot.cs:line 212 at OpenSearch.Client.Specification.SnapshotApi.SnapshotNamespace.Get(Name repository, Names snapshot, Func`2 selector) in /home/runner/work/opensearch-net/opensearch-net/src/OpenSearch.Client/OpenSearchClient.Snapshot.cs:line 200 at Tests.Reproduce.GitHubIssue4537.<>c__DisplayClass0_0.<CanDeserializeSnapshotShardFailure>b__0() in /home/runner/work/opensearch-net/opensearch-net/tests/Tests.Reproduce/GitHubIssue4537.cs:line 94 at FluentAssertions.Specialized.FunctionAssertionHelpers.NotThrow[T](Func`1 subject, String because, Object[] becauseArgs).

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-dotnet@v3, actions/cache@v3, actions/upload-artifact@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/upload-artifact@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/