Twitter与Facebook分享卡片无法识别Meta标签问题求助

我已在HTML头部添加所有所需Meta标签，但使用Twitter Card Validator或opengraph.dev等工具检测站点时，标签无法被识别。Twitter Card Validator日志提示：ERROR: Fetching the page failed because other errors.，不清楚问题出在哪里。

我的HTML头部代码如下：

<!-- Primary Meta Tags -->
<title>Web | DASA</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="author" content="DASA">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1" />
<meta name="description" content="Web | DASA is a a full-service web design and development company that specializes in creating custom websites that are tailored to the needs and goals of our clients.">
<!-- Open Graph / Facebook -->
<meta property="og:type" content="website">
<meta property="og:url" content="https://dasa.rf.gd/">
<meta property="og:title" content="Web | DASA">
<meta property="og:description" content="Web | DASA is a a full-service web design and development company that specializes in creating custom websites that are tailored to the needs and goals of our clients.">
<meta property="og:image" content="https://dasa.rf.gd/images/DASA_1000.png">
<!-- Google Verification -->
<meta name="google-site-verification" content="DT_07_6QW8E0XDtntVY_u5nDz8OFjlgGg9lKnd6uPiU" />

<!-- Twitter -->
<meta property="twitter:card" content="summary_large_image">
<meta property="twitter:url" content="https://dasa.rf.gd//">
<meta property="twitter:title" content="Web | DASA">
<meta property="twitter:description" content="Web | DASA is a a full-service web design and development company that specializes in creating custom websites that are tailored to the needs and goals of our clients.">
<meta property="twitter:image" content="https://dasa.rf.gd/images/DASA_1000.png">

站点地址：https://dasa.rf.gd

可能的问题及解决方向 #

• URL格式错误：Twitter标签里的twitter:url值有多余斜杠（https://dasa.rf.gd//），修正为https://dasa.rf.gd/或https://dasa.rf.gd
• 图片链接不可访问：确认https://dasa.rf.gd/images/DASA_1000.png是否能正常打开，工具抓取时图片失效会影响检测
• 主机限制爬虫请求：免费主机服务商可能会拦截检测工具的爬虫请求，导致页面抓取失败，可联系服务商确认
• HTTP状态码异常：用curl -I https://dasa.rf.gd命令查看站点返回的状态码，若为403、500等错误，需排查服务器配置
• 防火墙/安全插件拦截：如果站点配置了CDN或安全插件，检查是否阻止了Twitter、opengraph等工具的爬虫UA

内容的提问来源于stack exchange，提问作者c.dasa