Unable to Initialize Client

I'm trying to do a minimal setup of connecting a client to python lsp in order to get completions for python files with a C# application. The program always fails on the initialize call with the below newtonsoft error.

using OmniSharp.Extensions.LanguageServer.Client;
using OmniSharp.Extensions.LanguageServer.Protocol.Client;
using OmniSharp.Extensions.LanguageServer.Protocol.Client.Capabilities;
using OmniSharp.Extensions.LanguageServer.Protocol.Document;
using OmniSharp.Extensions.LanguageServer.Protocol.General;
using OmniSharp.Extensions.LanguageServer.Protocol.Models;
using System.Diagnostics;

ILanguageClient _client;
var programPath = @"C:\Users\myComputer\Desktop\cpython-3.11.11+20250212-x86_64-pc-windows-msvc-shared-pgo-full\python\install\python.exe";
ProcessStartInfo info = new ProcessStartInfo(programPath, "-m pylsp -v");
info.WorkingDirectory = Path.GetDirectoryName(programPath);
info.RedirectStandardInput = true;
info.RedirectStandardOutput = true;
info.UseShellExecute = false;

Process process = new Process
{
    StartInfo = info
};

process.Start();

_client = LanguageClient.Create(
    options =>
    {
        options
           .WithInput(process.StandardOutput.BaseStream)
           .WithOutput(process.StandardInput.BaseStream);
    }
);

CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();

await _client.Initialize(cancellationTokenSource.Token);

try
{
    var actualCompletions = await _client.TextDocument.RequestCompletion(
        new CompletionParams
        {
            TextDocument = @"path\to\someScript.py",
            Position = (23, 11),
        }, cancellationTokenSource.Token
    );

    System.Threading.Thread.Sleep(1000);

    var items = actualCompletions.Items;

    Console.WriteLine("items.Count: {0}", items?.Count());
    Console.WriteLine("actualCompletions: {0}", string.Join(",", items?.Select(p => p.Label)));
}
catch (Exception ex)
{
    Console.WriteLine("Exception thrown: {0}", ex.Message);
}

Newtonsoft.Json.JsonSerializationException
  HResult=0x80131500
  Message=Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'OmniSharp.Extensions.LanguageServer.Protocol.Models.NotebookSelector' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.
To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
Path 'result.capabilities.notebookDocumentSync.notebookSelector', line 1, position 704.
  Source=Newtonsoft.Json
  StackTrace:
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureArrayContract(JsonReader reader, Type objectType, JsonContract contract)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType)
   at Newtonsoft.Json.Linq.JToken.ToObject(Type objectType, JsonSerializer jsonSerializer)
   at Newtonsoft.Json.Linq.JToken.ToObject[T](JsonSerializer jsonSerializer)
   at OmniSharp.Extensions.JsonRpc.ResponseRouter.ResponseRouterReturnsImpl.<Returning>d__4`1.MoveNext()
   at OmniSharp.Extensions.LanguageServer.Client.LanguageClient.<Initialize>d__80.MoveNext()
   at Program.<<Main>$>d__0.MoveNext() in C:\Repos\TestLSPClient\Program.cs:line 35

Start at LanguageClient.Initialize and the NotebookSelector model named in the deserialization error; compare the python-lsp initialize response's notebookSelector shape with the protocol model. Reproduce the failure with the shown C# client and python-lsp setup, then verify that initialization completes without the Newtonsoft.Json exception.