No error message when require a non-existent lua file

[sgon00]

Hi, when I use local foo = require "foo" and foo.lua does NOT exist, I can not see any error message displayed by the LSP server. I tried both nvim-lspconfig and vscode two editors. Is this expected or not? Thanks a lot.

[sgon00]

I am very sorry. I think this is duplicated to the question #2339. I didn't find it at the first time search. I will close this question as duplicated.