Error detected while processing BufNewFile Autocommands for "*.java".

[tsuji-riya]

Does this bug happen when you install plugin without vim-polyglot?
yes.

Describe the bug:
When I open 'vim Main.java', vim says

"Main.java" [New]
Error detected while processing BufNewFile Autocommands for "*.java"..FileType Autocommands for "*"..Syntax Autocommands for "*"..function <SNR>11_SynSet[
25]..script /usr/share/vim/vim91/syntax/java.vim:
line  405:
E28: No such highlight group name: markdownId markdownLineStart markdownH1 markdownH2 markdownHeadingRule markdownRule markdownCode markdownCodeBlock mark
downIdDeclaration
Press ENTER or type command to continue

To Reproduce:
Device: MacBook 2020 M1
Vim version: 9.1.754

The ~/.vim/vimrc file is

set laststatus=2

set belloff=all

set expandtab
set tabstop=2
set shiftwidth=2

set nocompatible

hi Comment ctermfg=gray

call plug#begin('~/.vim/plugged')

Plug 'sheerun/vim-polyglot'
Plug 'itchyny/lightline.vim'

call plug#end()

After editing, I do ':PlugInstall' and $ vim Main.java

[bratpeki]

+1, I've had the same thing happen!

[bratpeki]

Additionally, it also affects non-empty files.

---

Some --version output for context:

VIM - Vi IMproved 9.1 (2024 Jan 02, compiled Feb 02 2025 00:42:00)
Included patches: 1-1065
Compiled by Arch Linux