我在wordpress中使用联系表7多步操作，当我在文件中使用此简码时，出现此错误。当我通过多步骤删除我的简码时，不会出现错误。请帮忙
该网站遇到技术困难
这是我的短命
[multistep "1-3-https://mywebsite.com/driver-form-2"]
这是我的调试错误
Fatal error: Uncaught Error: Class 'WPCF7_FormTag' not found in /home/website.com/wp-content/plugins/contact-form-7-multi-step-module/form-tags/module-multistep.php:58 Stack trace: #0 /home/website.com/wp-content/plugins/contact-form-7/includes/shortcodes.php(174): cf7msm_multistep_shortcode_handler(Array) #1 [internal function]: WPCF7_ShortcodeManager->do_shortcode_tag(Array) #2 /home/website.com/wp-content/plugins/contact-form-7/includes/shortcodes.php(94): preg_replace_callback('/(\\[?)\\[(respon...', Array, '<div style="hei...') #3 /home/website.com/wp-content/plugins/contact-form-7/includes/contact-form.php(500): WPCF7_ShortcodeManager->do_shortcode('<div style="hei...') #4 /home/website.com/wp-content/plugins/contact-form-7/includes/contact-form.php(559): WPCF7_ContactForm->form_do_shortcode() #5 /home/website.com/wp-content/plugins/contact-form-7/includes/contact-form.php(342): WPCF7_ContactForm->form_elements() #6 /home/naxtelca/rideonri in /home/website.com/wp-content/plugins/contact-form-7-multi-step-module/form-tags/module-multistep.php on line 58