This is occurring due to blocking of some JS files which are not allowing to load ajax.js. This is one of the security things implemented in Chrome and Safari (as of now) which does not allow the content to be loaded from another place if it is not secure. Right now your Helical Insight application is not secure (i.e. it is not HTTPS) so many requests are being blocked by the browser.
Hence first thing is you can put the below patch and then have helical insight on secure server like HTTPS etc. Then it will work fine even on
Please download this patch (file efw.zip).
Unzip the folder and place at the location …/hi/apache-tomcat-9/webapps/hi-ee/WEB-INF/helicalinsight/
Restart the server.
Refresh your browser.
Note: by default this patch is present in 4.1 GA onwards version of Helical Insight.