Autocomplete is not working

### Description

I get this error on messages:

> Company: An error occurred in auto-begin
> Company: backend company-capf error "jsonrpc-error: "request id=17 failed:", (jsonrpc-error-code . -32603), (jsonrpc-error-message . "no type check results"), (jsonrpc-error-data)" with args (candidates Newt)

### Repro steps

THis is my configuration, I'm using MAC OS X catalina and dotnet 3.1

;;; my-fsharp.el --- fsharp configuration -*- lexical-binding: t; -*-
;;; Commentary:
;;
;;; Code:
(use-package fsharp-mode
:defer t
:ensure t)
(add-to-list 'auto-mode-alist '("\\.fs[iylx]?$" . fsharp-mode))

(require 'eglot-fsharp)

(setq inferior-fsharp-program "dotnet fsi")

(require 'dotnet)
(add-hook 'fsharp-mode-hook 'dotnet-mode)

(provide 'my-fsharp)

;;; my-fsharp.el ends here

### Expected behavior

After M-x eglot, it start well ,

[eglot] Connected! Server `EGLOT (FSNetCore/fsharp-mode)' now managing `fsharp-mode' buffers in project `FSNetCore'.

I'm creating the project from here https://docs.microsoft.com/es-es/dotnet/fsharp/get-started/get-started-command-line

### Actual behavior

but then start error with autocomplete

### Related information

* Operating system

Mac os catalina 10.15.2
learn/functional-programming/FSNetCore via .NET 3.1.100
➜ dotnet --version
3.1.100

* Emacs version

27