用xkeyval给文档类设置选项会报错？

testclass.cls:

\ProvidesClass{testclass}
\NeedsTeXFormat{LaTeX2e}

\RequirePackage{xkeyval}

\define@key{family}{key1}[]{\def\mytext{#1}}
\define@key{family}{key2}[]{\def\MyText{#1}}
\presetkeys{family}{key1=12345, key2=abcde}{}

\DeclareOptionX{text}{\setkeys{family}{#1}}
\ProcessOptionsX
\ExecuteOptionsX{text={key1=12345, key2=abcde}}

\LoadClass{ctexbook}

main.tex，不会报错：

\documentclass{testclass}
\begin{document}
    \mytext

    \MyText
\end{document}

main.tex，会报错：

\documentclass[text={key1=67890}]{testclass}
\begin{document}
    \mytext

    \MyText
\end{document}

错误信息如下：

main.tex:
\RequirePackage or \LoadClass in Options Section.

The font size command \normalsize is not defined:

Unused global option(s):
    [text={key1=67890}].

testclass.cls:
Missing \begin{document}.

You can't use `macro parameter character #' in horizontal mode.
\@removeelement #1#2#3->\def \reserved@a ##1,#1,##

Paragraph ended before \reserved@a was complete.
<to be read again> 

请问有什么办法能解决？

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