'attempt to index a Boolean value'

[Bridges369]

I'm configuring the LSPs, following the tutorial and adapting it to my use. But the 'handlers.lua' file does not work as expected. It returns:
(it's in Portuguese and I know this is irrelevant)

Erro detectado ao processar C:\Users\55549.SAMSUNG-BOOK\AppData\Local\nvim\init.lua:
E5113: Error while calling lua chunk: C:\Users\55549.SAMSUNG-BOOK\AppData\Local\nvim\init.lua:10: attempt to index a boolean value
stack traceback:
        C:\Users\55549.SAMSUNG-BOOK\AppData\Local\nvim\init.lua:10: in main chunk

The default file init.lua is a symbolic link to ~/.dotfiles/.lua

content of .lua

package.path = os.getenv("USERPROFILE") .. "\\.dotfiles\\lua\\?.lua"

require "options"
require "keymaps"
require "packer"
require "colorscheme"
require "display"
require "spell"
-- {{ LSP }}
require "lsp.handlers".setup()
require "lsp.mason"
require "lsp.null-ls"
require "lsp-installer"
-- {{ PLUGINS }}
require "plugins.airline"
require "plugins.telescope"
require "plugins.treesitter"
require "plugins.cmp"

content of handlers.lua

local M = {}

-- TODO: backfill this to template
M.setup = function()
  local signs = {
    { name = "DiagnosticSignError", text = "" },
    { name = "DiagnosticSignWarn", text = "" },
    { name = "DiagnosticSignHint", text = "" },
    { name = "DiagnosticSignInfo", text = "" },
  }

  for _, sign in ipairs(signs) do
    vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = "" })
  end

  local config = {
    -- disable virtual text
    virtual_text = false,
    -- show signs
    signs = {
      active = signs,
    },
    update_in_insert = true,
    underline = true,
    severity_sort = true,
    float = {
      focusable = false,
      style = "minimal",
      border = "rounded",
      source = "always",
      header = "",
      prefix = "",
    },
  }

  vim.diagnostic.config(config)

  vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, {
    border = "rounded",
  })

  vim.lsp.handlers["textDocument/signatureHelp"] = vim.lsp.with(vim.lsp.handlers.signature_help, {
    border = "rounded",
  })
end

local function lsp_highlight_document(client)
  -- Set autocommands conditional on server_capabilities
  if client.server_capabilities.documentHighlight then
    vim.api.nvim_exec(
      [[
      augroup lsp_document_highlight
        autocmd! * <buffer>
        autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
        autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
      augroup END
    ]],
      false
    )
  end
end

local function lsp_keymaps(bufnr)
  local opts = { noremap = true, silent = true }
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gD", "<cmd>lua vim.lsp.buf.declaration()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gd", "<cmd>lua vim.lsp.buf.definition()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "K", "<cmd>lua vim.lsp.buf.hover()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<C-k>", "<cmd>lua vim.lsp.buf.signature_help()<CR>", opts)
  -- vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
  -- vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>ca", "<cmd>lua vim.lsp.buf.code_action()<CR>", opts)
  -- vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>f", "<cmd>lua vim.diagnostic.open_float()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "[d", '<cmd>lua vim.diagnostic.goto_prev({ border = "rounded" })<CR>', opts)
  vim.api.nvim_buf_set_keymap(
    bufnr,
    "n",
    "gl",
    '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics({ border = "rounded" })<CR>',
    opts
  )
  vim.api.nvim_buf_set_keymap(bufnr, "n", "]d", '<cmd>lua vim.diagnostic.goto_next({ border = "rounded" })<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>q", "<cmd>lua vim.diagnostic.setloclist()<CR>", opts)
  vim.cmd [[ command! Format execute 'lua vim.lsp.buf.formatting()' ]]
end

M.on_attach = function(client, bufnr)
  if client.name == "tsserver" then
    client.server_capabilities.documentFormattingProvider = false
  end
  lsp_keymaps(bufnr)
  lsp_highlight_document(client)
end

local capabilities = vim.lsp.protocol.make_client_capabilities()

local status_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
if not status_ok then
  return
end

M.capabilities = cmp_nvim_lsp.default_capabilities(capabilities)

return M

Output of nvim --version

NVIM v0.8.2
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3
Compilado por runneradmin@fv-az28-353

Features: -acl +iconv +tui
See ":help feature-compile"

    arquivo vimrc de sistema: "$VIM\sysinit.vim"
            padrão para $VIM: "C:/Program Files (x86)/nvim/share/nvim"

Run :checkhealth for more info

Output of command tre

(only relevant content)
.
├── lua
│   ├── colorscheme.lua
│   ├── display.lua
│   ├── keymaps.lua
│   ├── lsp.lua
│   ├── lsp
│   │   ├── handlers.lua
│   │   ├── lsp-installer.lua
│   │   ├── mason.lua
│   │   ├── null-ls.lua
│   │   └── settings
│   │       └── sumneko_lua.lua
│   ├── options.lua
│   ├── packer.lua
│   ├── plugins
│   │   ├── airline.lua
│   │   ├── autopairs.lua
│   │   ├── cmp.lua
│   │   ├── colorizer.lua
│   │   ├── telescope.lua
│   │   └── treesitter.lua
│   ├── snippets
│   │   ├── _.snippets
│   │   ├── lua.snippets
│   │   └── ruby.snippets
│   └── spell.lua
└── init.lua

[svfcode]

Had the same problem.. this fix helped me.