Error whenever I open a file that is not supported by null-ls

[augustocdias]

I'm having the following error after I open a filetype that is not supported/configured. It started after I installed null-ls.

Error detected while processing CursorHold Autocommands for "*":
E5108: Error executing lua ...ovim/0.5.1_1/share/nvim/runtime/lua/vim/lsp/handlers.lua:458: bad argument #2 to 'format' (number expected, got nil)

Am I doing something wrong?

Here's my null-ls config: https://github.com/augustocdias/dotfiles/blob/main/.config/nvim/lua/lsp-config.lua#L148

If I open a toml file for example this error pop's up in the messages.

Edit: I've just noticed it happens with markdown too... So not only with "unsupported" files

[jose-elias-alvarez]

I think the issue is your document_highlight autocommand. The error you're getting isn't descriptive due to an issue that has been fixed on Neovim master, but on 0.6.0 I get the following error:

Error detected while processing CursorHold Autocommands for "*":
method textDocument/documentHighlight is not supported by any of the servers registered for the current b
uffer

You could either add silent! to your autocommand to suppress the error or make it more granular, e.g. by making it buffer-local and checking the client's capabilities in on_attach:

local on_attach = function(client)
    if client.resolved_capabilities.document_highlight then
        vim.cmd("autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()")
    end
end

[augustocdias]

I'll try that. Thanks and amazing job with the plugin. It is really helpful.