Fix some bugs

Author: HyunSeob

layout/includes/article.pug

@@ -51,7 +51,7 @@ article#article.article(itemscope itemtype="https://schema.org/BlogPosting")
 
   include sharer
 
-  if theme.liveRe.uid
+  if theme.liveRe && theme.liveRe.uid
     #lv-container(data-id="city", data-uid="#{theme.liveRe.uid}")
     script.
       (function(d, s) {

layout/includes/post-list.pug

@@ -43,7 +43,9 @@ section.post-list
       .post-list__item__col-1
         a.post-list__item__link(href=url_for(post.path))
           - var banner = bannerOf(post) || theme.default.url;
-          .post-list__item__link__background(style="background-image: url('#{ banner }')")
+          .post-list__item__link__background(style={
+            'background-image': `url('${banner}')`
+          })
       .post-list__item__col-2
         .post-list__item__meta
           if post.categories && post.categories.length

layout/post.pug

@@ -12,6 +12,8 @@ block content
         .related-posts__item__wrapper
           a.related-posts__item(href=url_for(post.path))
             - var banner = bannerOf(post) || theme.default.url;
-            .related-posts__item__background(style="background-image: url('#{ banner }')")
+            .related-posts__item__background(style={
+              'background-image': `url('${banner}')`
+            })
             .related-posts__item__overlay
             span.related-posts__item__title= post.title || 'Untitled'