please mates my site is blank

someone should please help me fix this error on my cpanel php.I am a newbie i just started having little traffic and BOOm this happened when i tried to upgrade php level but i didnt get it right, other things i am getting is no resourceful to me because i am not that experienced
home/payafric/public_html/cyphrox.com/core/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php on line 235

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