Most likely your sdk.js in tomcat/webapps/botlibre/scripts/sdk.js is not pointing at the correct URL, you need to update it to your domain name, IP, or localhost.
// Development server (comment for production or uncomment development)
//SDK.DOMAIN = window.location.host;
//SDK.DOMAIN = "184.108.40.206";
//SDK.APP = "/botlibreplatform";
//SDK.scheme = "https:" == document.location.protocol ? "https" : "http";
You can also right click the page, inspect, and check your browser dev console for errors.