I Can't create a tournament.

Hi staff..

Not only I can’t create teams-.—-

I reset all instalation from my hosting, and reinstall arcane on it.
I’m still not create a team, also I can’t create a tournament.
this is the error: “Fatal error: Can’t use function return value in write context in /home/redbutto/public_html/profesiongamer.com/wp-content/themes/arcane/tmp-tournament-single.php on line 862”.

I didn’t change nothing about code. Can you help me please?
Thank you.