I broke up with neovim....vim is my best friend now

dot_vim/plugged/vim-airline/autoload/airline/extensions/vim9lsp.vim

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+" MIT License. Copyright (c) 2021       DEMAREST Maxime (maxime@indelog.fr)
+" Plugin: https://github.com/yegappan/lsp
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+if !exists('*lsp#lsp#ErrorCount')
+    finish
+endif
+
+let s:error_symbol = get(g:, 'airline#extensions#vim9lsp#error_symbol', 'E:')
+let s:warning_symbol = get(g:, 'airline#extensions#vim9lsp#warning_symbol', 'W:')
+
+function! airline#extensions#vim9lsp#get_warnings() abort
+    let res = get(lsp#lsp#ErrorCount(), 'Warn', 0)
+    return res > 0 ? s:warning_symbol . res : ''
+endfunction
+
+function! airline#extensions#vim9lsp#get_errors() abort
+    let res = get(lsp#lsp#ErrorCount(), 'Error', 0)
+    return res > 0 ? s:error_symbol . res : ''
+endfunction
+
+function! airline#extensions#vim9lsp#init(ext) abort
+  call airline#parts#define_function('vim9lsp_warning_count', 'airline#extensions#vim9lsp#get_warnings')
+  call airline#parts#define_function('vim9lsp_error_count', 'airline#extensions#vim9lsp#get_errors')
+endfunction