wordpress在选择好的主题下面有一个自定义，点自定义出行致命错误是什么问题

下面是提示的具体内容，只有点那个自定义会出现这个情况。
致命错误: Uncaught Error: Class 'WP_Customize_cs_field_Control' not found in /www/wwwroot/bz.2020lab.top/wp-content/themes/blackgrid/inc/wpie/cs/classes/customize.class.php:136 Stack trace: #0 /www/wwwroot/bz.2020lab.top/wp-content/themes/blackgrid/inc/wpie/cs/classes/customize.class.php(83): CSFramework_Customize->add_section(Object(WP_Customize_Manager), Array) #1 /www/wwwroot/bz.2020lab.top/wp-includes/class-wp-hook.php(303): CSFramework_Customize->customize_register(Object(WP_Customize_Manager)) #2 /www/wwwroot/bz.2020lab.top/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) #3 /www/wwwroot/bz.2020lab.top/wp-includes/plugin.php(470): WP_Hook->do_action(Array) #4 /www/wwwroot/bz.2020lab.top/wp-includes/class-wp-customize-manager.php(933): do_action('customize_regis...', Object(WP_Customize_Manager)) #5 /www/wwwroot/bz.2020lab.top/wp-includes/class-wp-hook.php(303): WP_Customize_Manager->wp_loaded('') #6 /www/wwwroot/bz.2020lab.top/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array) in /www/wwwroot/bz.2020lab.top/wp-content/themes/blackgrid/inc/wpie/cs/classes/customize.class.php on line 136
此站点遇到了致命错误，请查看您站点管理员电子邮箱中收到的邮件来获得指引.

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