error when pressing "=" with lua language server enabled

[gassiss]

Make sure you have done the following

• Updated to the latest version of blink.cmp
• Searched for existing issues and documentation (try <C-k> on https://cmp.saghen.dev)

Bug Description

hey! decided to try out blink after hearing so many good things about it. I'm loving it so far! very fast and easy to configure!

Having issues setting up the lua language server though. Whenever I type = I get the error message below:

Error executing vim.schedule lua callback: bad argument #3: error converting Lua string to String (invalid utf-8 sequence of 1 b
ytes from index 8)
stack traceback:
        [C]: in function 'fuzzy_matched_indices'
        ....cmp/lua/blink/cmp/completion/windows/render/context.lua:23: in function 'get_from_items'
        ...ink.cmp/lua/blink/cmp/completion/windows/render/init.lua:57: in function 'draw'
        ...lazy/blink.cmp/lua/blink/cmp/completion/windows/menu.lua:55: in function 'open_with_items'
        ...ta/nvim/lazy/blink.cmp/lua/blink/cmp/completion/init.lua:61: in function 'callback'
        .../nvim/lazy/blink.cmp/lua/blink/cmp/lib/event_emitter.lua:28: in function 'emit'
        ...ta/nvim/lazy/blink.cmp/lua/blink/cmp/completion/list.lua:94: in function 'show'
        ...ta/nvim/lazy/blink.cmp/lua/blink/cmp/completion/init.lua:53: in function <...ta/nvim/lazy/blink.cmp/lua/blink/cmp/com
pletion/init.lua:29>

It happens even in the following repro.lua
with the basic config provided in the docs

Thanks for all the work in this project! ⭐

Relevant configuration

repro.lua

neovim version

NVIM v0.10.2 
Build type: Release 
LuaJIT 2.1.1732813678 
Run "nvim -V1 -v" for more info

blink.cmp version

version 0.10.0                      
tag     v0.10.0                      
branch  main                      
commit  1cc3b1a

[Saghen]

Do you have any special characters in the buffer you're testing? (emojis, accents, non-latin alphabets, etc) I believe that's triggering the error

[gassiss]

no, it happens in the repro.lua file example as well. nvim -u repro.lua repro.lua and type = anywhere