fix "error executing lua callback ... attempt to concatenate local 'method' (a table value)"

[bartman]

After updating my plugins I his this error, while editing a shell script. Other LSPs seem to work fine.

Error detected while processing InsertLeave Autocommands for "*":
Error executing lua callback: .../.local/share/nvim/lazy/none-ls.nvim/lua/null-ls/rpc.lua:131: attempt to concatenate local 'method' (a table value)
stack traceback:
        .../.local/share/nvim/lazy/none-ls.nvim/lua/null-ls/rpc.lua:131: in function 'notify'
        ...art/usr/neovim/share/nvim/runtime/lua/vim/lsp/client.lua:784: in function 'notify'
        ...ocal/share/nvim/lazy/none-ls.nvim/lua/null-ls/client.lua:205: in function 'notify_client'
        .../.local/share/nvim/lazy/none-ls.nvim/lua/null-ls/rpc.lua:149: in function 'flush'
        ....local/share/nvim/lazy/none-ls.nvim/lua/null-ls/init.lua:49: in function <....local/share/nvim/lazy/none-ls.nvim/lua/null-ls/init.lua:48>

It would seem that the method passed to dispatchers.notify() method is a table, not a string.

I have used vim.inspect(method) to convert that method table to a string before concatenation.

Problem went away, LSP working fine in bash.

[mochaaP]

I believe this is likely the same issue with #209.

Are you using nightly?

[mochaaP]

I could not reproduce this (both on nightly and stable). Can you attach an example of the table in question?

[mochaaP]

method MUST be a string. see :h vim.lsp.rpc.start().

[jiangyinzuo]

none-ls.nvim/lua/null-ls/client.lua

Lines 204 to 209 in 8fd7b29

	if vim.fn.has("nvim-0.11") == 1 then
	client:notify(method, params)
	else
	---@diagnostic disable-next-line: param-type-mismatch
	client.notify(method, params)
	end

I met the same problem. I changed the line 205 client:notify(method, params) to client.notify(method, params), then it works.

nvim -V1 -v output:

NVIM v0.11.0-dev
Build type: RelWithDebInfo
LuaJIT 2.1.1719379426
Compilation: /usr/bin/cc -g -O2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -ffile-prefix-map=/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878=. -flto=auto -ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fdebug-prefix-map=/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878=/usr/src/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878-151a855c1b~ubuntu24.04.1 -O2 -g -Og -g -flto=auto -fno-fat-lto-objects -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wvla -Wdouble-promotion -Wmissing-noreturn -Wmissing-format-attribute -Wmissing-prototypes -fsigned-char -fstack-protector-strong -Wno-conversion -fno-common -Wno-unused-result -Wimplicit-fallthrough -fdiagnostics-color=auto  -DUNIT_TESTING -D_GNU_SOURCE -DINCLUDE_GENERATED_DECLARATIONS -DUTF8PROC_STATIC -I/usr/include/luajit-2.1 -I/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878/.deps/usr/include -I/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878/build/src/nvim/auto -I/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878/build/include -I/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878/build/cmake.config -I/build/neovim-1Q4mpR/neovim-0.10.0~ubuntu1+git202411301226-c33ec2d7ce-971e32c878/src -I/usr/include

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/share/nvim"

Run :checkhealth for more info

[mochaaP]

hi @jiangyinzuo, what neovim commit are you on?

[jiangyinzuo]

hi @jiangyinzuo, what neovim commit are you on?

Oh, I updated to the latest commit and then no error occurred. Thanks.

[mochaaP]

tldr: update to latest nightly.

[bartman]

I updated nvim and none-ls.nvim to latest commits, and problem went away.

thank you.