= javascript_include_tag "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"

= javascript_include_tag "https://code.jquery.com/jquery-3.3.1.min.js", 
  integrity: "sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=",
  crossorigin: "anonymous"

Switch jquery cdn source to code.jquery.com and add integrity check.
Switch jquery cdn source to code.jquery.com and add integrity check.

SumOfUs/Champaign,SumOfUs/Champaign,SumOfUs/Champaign,SumOfUs/Champaign,SumOfUs/Champaign