我将更新推送到我的Github Pages网站，但它无法构建。在本地，它建立得很好。
回购：https://github.com/valeIT/valeIT.github.io/
页面构建失败，出现以下错误：
值'nil'被传递给期望有效的与日期相关的过滤器
/_layouts/post.html中的日期或其中一个布局。更多 信息，见 https://help.github.com/articles/page-build-failed-date-is-not-a-valid-datetime/有关Jekyll疑难解答的信息，请参阅：
https://help.github.com/articles/troubleshooting-jekyll-builds
我看了一下“/_layouts/post.html”，但我对Liquid的了解非常基本，并且看不出任何错误。
post.html的内容：
---
---
<!DOCTYPE html>
<html>
{% include head.html %}
<body itemscope itemtype="http://schema.org/Article">
{% include header.html %}
<main class="content" role="main">
<article class="post">
{% if page.image %}
<div class="article-image">
<div class="post-image-image" style="background-image: url({% if page.image %}{{ page.image }}{% endif %})">
Article Image
</div>
<div class="post-image-image2" style="background-image: url({% if page.image2 %}{{ page.image2 }}{% endif %})">
Article Image
</div>
<div class="post-meta">
<h1 class="post-title">{{ page.title }}</h1>
<div class="cf post-meta-text">
<div class="author-image" style="background-image: url({{ site.author_image }})">Blog Logo</div>
<h4 class="author-name" itemprop="author" itemscope itemtype="http://schema.org/Person">{{ site.author }}</h4>
on
<time datetime="{{ page.date | date: "%F %R" }}">{{ page.date | date_to_string }}</time>
<!-- , tagged on {{#foreach tags}}<span class="post-tag-{{slug}}">{{#if @first}}{{else}}, {{/if}}<a href="/tag/{{slug}}">{{name}}</a></span>{{/foreach}} -->
- {{ page.content | number_of_words }} Words - {{ content | reading_time_as_i }}.
</div>
<div style="text-align:center">
<a href="#topofpage" class="topofpage"><i class="fa fa-angle-down"></i></a>
</div>
</div>
</div>
{% else %}
<div class="noarticleimage">
<div class="post-meta">
<h1 class="post-title">{{ page.title }}</h1>
<div class="cf post-meta-text">
<div class="author-image" style="background-image: url({{ site.author_image }})">Blog Logo</div>
<h4 class="author-name" itemprop="author" itemscope itemtype="http://schema.org/Person">{{ page.author }}</h4>
on
<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>
<!-- , tagged on {{#foreach tags}}<span class="post-tag-{{slug}}">{{#if @first}}{{else}}, {{/if}}<a href="/tag/{{slug}}">{{name}}</a></span>{{/foreach}} -->
</div>
</div>
</div>
<br>
<br>
<br>
{% endif %}
<section class="post-content">
<div class="post-reading">
<span class="post-reading-time"></span> read
</div>
<a name="topofpage"></a>
{{content}}
</section>
<footer class="post-footer">
<section class="share">
{% for social in site.social %}
{% if social.share_url != null %}
<a class="icon-{{ social.icon }}" href="{{ social.share_url }}{{ social.share_title }}{{page.title | cgi_escape}}{{ social.share_link }}{{site.url}}{{page.id}}"
onclick="window.open(this.href, '{{ social.icon }}-share', 'width=550,height=255');return false;">
<i class="fa fa-{{ social.icon }}"></i><span class="hidden">{{ social.icon }}</span>
</a>
{% endif %}
{% endfor %}
</section>
</footer>
<div class="bottom-teaser cf">
<div class="isLeft">
<h5 class="index-headline featured"><span>Written by</span></h5>
<section class="author">
<div class="author-image" style="background-image: url({{site.author_image}})">Blog Logo</div>
<h4>{{ site.author }}</h4>
<p class="bio">{{author.bio}}</p>
<hr>
<p class="published">Published <time datetime="{{ page.date | date: "%F %R" }}">{{ page.date | date_to_string }}</time></p>
</section>
</div>
{{/post}}
<div class="isRight">
<h5 class="index-headline featured"><span>Supported by</span></h5>
<footer class="site-footer">
<section class="poweredby"><a href ="{{site.url}}/apps">Check Out My Apps</a></section>
<a class="subscribe" href="{{ "/feed.xml" | prepend: site.baseurl }}"> <span class="tooltip"> <i class="fa fa-rss"></i> You should subscribe to my feed.</span></a>
<div class="inner">
<section class="copyright">All content copyright <a href="{{@blog.url}}/">{{site.author}}</a> © {{ site.time | date: '%Y' }}<br>All rights reserved.</section>
</div>
</footer>
</div>
</div>
{%if site.disqus %}
<div id="disqus_thread"></div>
<script type="text/javascript">
/* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
var disqus_shortname = '{{site.disqus}}'; // required: replace example with your forum shortname
/* * * DON'T EDIT BELOW THIS LINE * * */
(function() {
var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
})();
</script>
<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
{% endif %}
</article>
</main>
<div class="bottom-closer">
<div class="background-closer-image" {%if site.cover %} style="background-image: url({{ site.cover }})"{% endif %}>
Image
</div>
<div class="inner">
<h1 class="blog-title">{{ site.title }}</h1>
<h2 class="blog-description">{{ site.description }}</h2>
<a href="/" class="btn">Back to Overview</a>
</div>
</div>
{% include javascripts.html %}
</body>
</html>
有什么想法吗？
答案 0 :(得分：1)
失败是因为
值'nil'已传递给与日期相关的过滤器
这意味着在您的帖子布局中，您可能正在使用layout: post处理非帖子内容，例如，在其前端内容中不包含date值的页面---在顶部）。
然后像<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>这样的代码会失败，因为您要将''传递给date_to_string过滤器。
您有两种选择：
layout: post属性的网页，并将其更改为layout: page 使代码更安全，在将其值发送到过滤器之前检查日期是否为非NIL，例如，使用上述time标记，请先检查date是否包含日期：< / p>
{% if page.date %}
<time datetime="{{ page.date | date_to_xmlschema }}">{{ page.date | date_to_string }}</time>
{% endif %}
此外，当jekyll在本地生成网站时，它会显示很多警告，例如：
Liquid Warning: Liquid syntax error (line 76): Unexpected character / in "{{/post}}" in /_layouts/post.html
Liquid Warning: Liquid syntax error (line 79): Unexpected character / in "{{!! After all the posts, we have the previous/next pagination links }}" in index.html
您应该将这些斜杠{{/posts}}移至{{posts}}，并在液体标签内删除其他符号，例如@和#。