找不到联系表7 POST URL-404

Question

单击联系表单7表单上的Submit按钮时，POST URL上显示404 Not Found错误状态。

据我所见，请求URL在/ wp-json /之后有两个斜杠。

例如请求网址：//mywebsite.com/wp-json//contact-form-7/v1/contact-forms/3/feedback

我禁用了所有插件，保存了永久链接，删除了缓存，总的来说，我尝试了所有可以在网上找到的解决方案。

WordPress中的永久链接具有自定义结构，末尾带有/%postname%/。如果我禁用自定义结构并保留永久链接“普通”，则该表单可以正常工作，但我不希望使用此解决方案，因为它会破坏其余网站。

WordPress Version: 4.9.8,   
Contact Form 7 Version: 5.1.1

---

这是我的.htaccess文件

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
RewriteRule ^(.*/)?\.git+ - [R=404,L] #Return 404 for files in .git folder
RewriteRule ^/?vendor/(.*)$ - [R=403,L] #Return 403 for files in vendor folder
RewriteRule ^(.*/)?bin+ - [R=404,L] #Return 404 for files in bin folder
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
RewriteRule ^wp-admin/includes/ - [F,L]
RewriteRule !^wp-includes/ - [S=3]
RewriteRule ^wp-includes/[^/]+\.php$ - [F,L]
RewriteRule ^wp-includes/js/tinymce/langs/.+\.php - [F,L]
RewriteRule ^wp-includes/theme-compat/ - [F,L]
</IfModule>
# END WordPress