go definition error "E259: not find "
gutentags_plus could not find the definition, but gutentags_plus can find the reference.
already set export GTAGSFORCECPP= in ~/.bashrc
GTAGS GPATH GRTAGS is normal.

try following debug way, message shows gutentags: Tracing is enabled. gutentags: [job stderr]: 'ctags: Notice: Terminate parsing: too deep brackets recursion in ***'

ctags version:
ctags --version Universal Ctags 5.9.0(p5.9.20211114.0), Copyright (C) 2015 Universal Ctags Team Universal Ctags is derived from Exuberant Ctags. Exuberant Ctags 5.8, Copyright (C) 1996-2009 Darren Hiebert Compiled: Nov 16 2021, 14:19:34 URL: https://ctags.io/ Optional compiled features: +wildcards, +regex, +gnulib_regex, +iconv, +option-directory, +packcc, +optscript
global version:
global (Global) 6.6.7 Powered by Berkeley DB 1.85. Copyright (c) 1996-2021 Tama Communications Corporation License GPLv3+: GNU GPL version 3 or later <http://www.gnu.org/licenses/gpl.html> This is free software; you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
vimrc
Plug 'skywind3000/gutentags_plus'
" enable gtags module
let g:gutentags_modules = ['ctags', 'gtags_cscope']
" config project root markers.
let g:gutentags_project_root = ['.root']
" generate datebases in my cache directory, prevent gtags files polluting my project
let g:gutentags_cache_dir = expand('~/.cache/tags')
" change focus to quickfix window after search (optional).
let g:gutentags_plus_switch = 1
let g:gutentags_ctags_tagfile = '.tags'
" 同时开启 ctags 和 gtags 支持:
let g:gutentags_modules = []
if executable('ctags')
let g:gutentags_modules += ['ctags']
endif
if executable('gtags-cscope') && executable('gtags')
let g:gutentags_modules += ['gtags_cscope']
endif
" 将自动生成的 ctags/gtags 文件全部放入 ~/.cache/tags 目录中,避免污染工程目录
let g:gutentags_cache_dir = expand('~/.cache/tags')
" 配置 ctags 的参数,老的 Exuberant-ctags 不能有 --extra=+q,注意
let g:gutentags_ctags_extra_args = ['--fields=+niazS', '--extra=+q']
let g:gutentags_ctags_extra_args += ['--c++-kinds=+px']
let g:gutentags_ctags_extra_args += ['--c-kinds=+px']
" 如果使用 universal ctags 需要增加下面一行,老的 Exuberant-ctags 不能加下一行
let g:gutentags_ctags_extra_args += ['--output-format=e-ctags']
" 禁用 gutentags 自动加载 gtags 数据库的行为
let g:gutentags_auto_add_gtags_cscope = 0