E48: Not allowed in sandbox: scriptencoding utf-8

[chenzhiwei]

Result from CocInfo

## versions

vim version: VIM - Vi IMproved 9.1 9011841
node version: v24.1.0
coc.nvim version: 0.0.82-54079c0 2025-10-13 20:16:26 +0800
coc.nvim directory: /home/xxx/.config/vim/bundle/coc.nvim
term: ghostty
platform: linux

## Log of coc.nvim

2025-10-20T15:23:07.861 INFO (pid:5163) [extension:coc-tabnine] - Using tabnine from /home/xxx/.local/share/coc/extensions/coc-tabnine-data/binaries/4.304.0/x86_64-unknown-linux-musl/TabNine
2025-10-20T15:23:07.988 INFO (pid:5163) [plugin] - coc.nvim initialized with node: v24.1.0 after 249
2025-10-20T15:23:07.990 INFO (pid:5163) [services] - LanguageClient Pyright Server state change: stopped => starting
2025-10-20T15:23:07.998 INFO (pid:5163) [language-client-index] - Language server "pyright" started with 5178
2025-10-20T15:23:08.181 INFO (pid:5163) [services] - LanguageClient Pyright Server state change: starting => running
2025-10-20T15:23:08.186 INFO (pid:5163) [services] - service pyright started
2025-10-20T15:23:11.940 INFO (pid:5163) [attach] - Request action: getTagList []
2025-10-20T15:23:12.028 ERROR (pid:5163) [node-client] - Error event from nvim: 0 Vim(call):E12: Command not allowed from exrc/vimrc in current dir or tag search - on notification "buf_set_var"
/home/xxx/.config/vim/bundle/coc.nvim/autoload/coc/cursor.vim[1]..function coc#api#Notify[6]..coc#api#Buf_set_var, line 2
2025-10-20T15:24:28.893 INFO (pid:5163) [attach] - receive notification: showInfo []

Describe the bug

In a Python project, using ctrl - ] to navigate code, will throw following error.

I tried several commits and found this commit is the reason.

Error detected while processing /home/xxx/.config/vim/bundle/coc.nvim/autoload/coc/cursor.vim:
line    1:
E48: Not allowed in sandbox: scriptencoding utf-8
Press ENTER or type command to continue

Error detected while processing function coc#cursor#move_to[2]..script /home/xxx/.config/vim/bundle/coc.nvim/autoload/coc/string.vim:
line    1:
E48: Not allowed in sandbox: scriptencoding utf-8

Reproduce the bug

We will close your issue when you don't provide minimal vimrc and we can't
reproduce it

• Create file mini.vim with：

"viminfo file
set viminfofile=~/.config/vim/.viminfo

"swapfile dir
set directory=/tmp//

"vim-plug setting
fun! VimPlug()
    call plug#begin('~/.config/vim/bundle')
        Plug 'neoclide/coc.nvim', {'branch': 'release'}
    call plug#end()
endfun
silent! call VimPlug()

set tagfunc=CocTagFunc
let g:coc_data_home = '~/.local/share/coc'
let g:coc_global_extensions = [
    \'coc-json',
    \'coc-yaml',
    \'coc-pyright',
    \'coc-snippets',
    \'coc-tabnine',
    \'coc-tsserver'
    \]

• Start vim with command: vim -u mini.vim

• Operate vim by opening a py file and ctrl - ] navigate code

Screenshots (optional)

If applicable, add screenshots to help explain your problem.

[fannheyward]

Tested with Vim 9.1.1850 and latest coc.nvim master, can't reproduce this, still debugging

[chenzhiwei]

I can also reproduce this in a container:

1. Install packages
2. Create Vim dir
3. Download plug.vim file
4. Download vimrc file(which is the above mini.vim)
5. Open vim, run :PlugInstall, then the coc extensions will also be installed
6. Open a python file with content import sys; sys.exit(), move cursor to exit and use ctrl - ] to jump.

docker run -it docker.io/library/debian:latest bash

apt update
apt install -y vim python3 nodejs npm

mkdir -p /root/.config/vim/autoload

touch /root/.config/vim/autoload/plug.vim
touch /root/.config/vim/vimrc

vim

vim test.py # try multiple times to open file, `ctrl - ]` jump, close

[fannheyward]

Still debugging on this, are you running with root user?

[chenzhiwei]

I can reproduce this in both root and normal user mode.

[fannheyward]

Updates: no progress for now, I couldn't reproduce this.