Jupiter Theme, white page

I try to install Jupiter theme, but i have a white screen on my site and wp-admin

my debug.log :

[29-Mar-2018 10:19:10 UTC] PHP Notice: Use of undefined constant REQUEST_URI - assumed ‘REQUEST_URI’ in /app/public/wp-content/themes/jupiter2/functions.php on line 73
[29-Mar-2018 10:19:10 UTC] PHP Stack trace:
[29-Mar-2018 10:19:10 UTC] PHP 1. {main}() /app/public/wp-admin/index.php:0
[29-Mar-2018 10:19:10 UTC] PHP 2. require_once() /app/public/wp-admin/index.php:10
[29-Mar-2018 10:19:10 UTC] PHP 3. require_once() /app/public/wp-admin/admin.php:31
[29-Mar-2018 10:19:10 UTC] PHP 4. require_once() /app/public/wp-load.php:37
[29-Mar-2018 10:19:10 UTC] PHP 5. require_once() /app/public/wp-config.php:86
[29-Mar-2018 10:19:10 UTC] PHP 6. include() /app/public/wp-settings.php:426

I have already change at ligne 73 : $_SERVER[REQUEST_URI] in $_SERVER[“REQUEST_URI”] and same white page

Thanks for your help