Cakephp3 is showing syntax error on webserver

When I put my app on the web server, I get this error in the log file from the app / webroot / error _log, but the app runs fine on localhost.

[14-May-2015 22:51:59] PHP Parse error:  syntax error, unexpected T_STRING, expecting T_CONSTANT_ENCAPSED_STRING or '(' in /public_html/app/webroot/index.php on line 29