diff --git a/Install-Tracks-2.5-on-Ubuntu-20.10.md b/Install-Tracks-2.5-on-Ubuntu-20.10.md
index fae7afb..144fbac 100644
--- a/Install-Tracks-2.5-on-Ubuntu-20.10.md
+++ b/Install-Tracks-2.5-on-Ubuntu-20.10.md
@@ -240,6 +240,12 @@ mysql> quit
 <s>&gt;rake --rakefile=/var/www/tracks/Rakefile db:migrate RAILS_ENV=production</s><br/>
 &gt;bundle exec rake db:migrate RAILS_ENV=production
 </blockquote>
+<p>If you get the error : "ExecJS::RuntimeUnavailable: Could not find a JavaScript runtime", that means that yourJavaScript runtime has lost its magic or you don't have a JavaScript runtime installed.</p>
+<p>When we installed "libapache2-mod-passenger" it suggested to install "nodejs"; so just install (or re-install) it."</p>
+<blockquote>
+>apt install nodejs
+</blockquote>
+
 <h3>Precompile assets</h3>
 <p>Static assets (images, stylesheets, and javascript) need to be compiled in order for them to work correctly with the new asset pipeline feature in Rails.</p>
 <p>going to the directory where Tracks is installed run</p>