TexLive 2021 下描述列表项错误中使用的 examplep 包

Question

我使用了examplep描述列表项中的包，我只是按照答案进行操作史蒂芬·柯特维茨他在回答这个问题时说：逐字描述列表项。

这是测试代码，这正是该问题的答案。

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[Q=yes]{examplep}
\begin{document}
\begin{description}
    \item[\Q{list comprehension [f a | a <- M a]}] bla bla bla
    \item[\PVerb{testing: \verb||{} #_$ }] item text
\end{description}
\end{document}

如果我没记错的话，它在我的 TexLive 2020 及更早版本中运行正常。但它似乎在我的新 TexLive 2021 中失败了（我使用的是 Windows 7 64 位操作系统，并使用了 Xelatex），出现以下错误：

(e:/texlive/2021/texmf-dist/tex/latex/lm/t1lmtt.fd
File: t1lmtt.fd 2015/05/01 v1.6.1 Font defs for Latin Modern
)

! Package examplep Error: \PVerb inner delimiter must be brace,
(examplep)                not backslash or control sequence or active char.

See the examplep package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.7     \item[\PVerb{testing: \verb||{} #_$ }]
                                               item text
Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

! You can't use `macro parameter character #' in restricted horizontal mode.
<argument> \PVerb {testing: \verb ||{} ##
                                         _$ }
l.7     \item[\PVerb{testing: \verb||{} #_$ }]
                                               item text
Sorry, but I'm not programmed to handle this case;
I'll just pretend that you didn't ask for it.
If you're in the wrong mode, you might be able to
return to the right one by typing `I}' or `I$' or `I\par'.

! Missing $ inserted.
<inserted text> 
                $
l.7     \item[\PVerb{testing: \verb||{} #_$ }]
                                               item text
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

有什么想法可以解决这个问题吗？