Redirect problem to home page

I just want to know how to redirect from https://gamehup.tk to https://gamehup.tk/index.php to avoid duplicate content can someone help me with this pls

Add this to your htaccess

RewriteEngine On
RewriteBase /

#only for the root directory
RewriteCond %{REQUEST_URI} ^/$
#if the uri is not already index.php
RewriteCond %{REQUEST_URI} !^/index.php [NC]
RewriteRule ^$ /index.php    [R=301,L]

it worked thanks for help

if your can help with this i want to add content securty policy for my site to secure it i

when i use this in my header Content-Security-Policy: script-src 'self’
some of my fle dont work

and how can i enable HTTP/2 + SPDY cloudflare

@ckhawand can you help me pls