Update

themes/educenter-hugo/layouts/_default/single.html

@@ -29,6 +29,11 @@
           <div class="col-12 my-4">
             <div class="border-bottom"></div>
           </div>
+          <div class="content">
+          <aside>
+  					{{ .TableOfContents }}
+  				</aside>
+          </div>
           <!-- blog contect -->
           <div class="col-12 mb-5">
             {{ .Content }}
@@ -47,4 +52,4 @@
 </section>
 <!-- /blog details -->
 
-{{ end }}
+{{ end }}

themes/educenter-hugo/layouts/schulchronik/single.html

@@ -13,6 +13,11 @@
     <div>
       <h2>{{ .Title }}</h2>
     </div>
+    <div class="content">
+    <aside>
+      {{ .TableOfContents }}
+    </aside>
+    </div>
     <!-- course details -->
     <div class="row">
       <div class="col-12 mb-4 content">