• nvim --version: NVIM v0.5.0-593-g1ca67a73c
• language server name/version: Godot 3.2.2
• Operating system/version: Arch Linux

lsp.log (Godot produces very verbose log, so I uploaded to pastebin)

Steps to reproduce

nvim
# Open any gdscript file
:bd

Actual behaviour

I got errors:

Error executing vim.schedule lua callback: /usr/share/nvim/runtime/lua/vim/lsp/rpc.lua:417: attempt to concatenate local 'result_id' (a nil value)

LSP[gdscript]: Error NO_RESULT_CALLBACK_FOUND: {
  error = {
    code = -32601,
    message = "Method not found: didClose"
  },
  id = vim.NIL,
  jsonrpc = "2.0

Expected behaviour

Buffer closed without errors.