If you face 404 page not found or 500 internal server error problem during installation (yourdomain/home/installation), It may happen for one of the 3 reason. Check each one and fix it. Your problem will be solved.
This problem basically happen one of the three reason. Check all the option and fix it . Your problem will be solved.
Also in some feature you can get this error Fatal error: Call to undefined function mb_detect_encoding() in /home/attentionsoft/public_html/spy/application/libraries/simple_html_dom.php on line 1234 It mostly happen for that you server has no mbstring installed or enabled. Make sure your server has mbstring enabled. In php.ini uncomment this line extension=php_mbstring.dll See the screen shot . http://prnt.sc/azbhed If you don’t have the access of your hosting root access please contact to your provider. Also here it is a topics about mbstring. You can find it helpful https://www.devside.net/wamp-server/call-to-undefined-function-mb_detect_encoding
After installation if you get this error then just do a quick tweak and install it again. Hope this will solve the problem.
From some customer we get complain that, their site broke after add the tracking js code. After investigate we found that, jquery easing plugin creating problem. This plugin has a little bug , in console we got error of this plugin jQuery.easing[jQuery.easing.def] is not a function. We are not going to explain it more where is the bug and why. Just we are giving a simple solution if you have used this plugin then Download the modified version of this jquery easing plugin and replace your existing plugin with this. Hope this may solve your problem.