Since upgrade, I am not able to renew membership from backend. As soon I press RENEW I am getting this Fatal Error message:
2016/05/13 11:57:55 [error] 8711#0: *2228 FastCGI sent in stderr: "PHP message: PHP Fatal error: Cannot pass parameter 2 by reference in /www/demo/sites/all/modules/civicrm/api/v3/utils.php on line 1408" while reading response header from upstream, client: 184.108.40.206, server: demo.com, request: "POST /civicrm/contact/view/membership HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/demo.com.sock:", host: "demo.com", referrer: "https://demo.com/civicrm/contact/view/membership?action=renew&reset=1&cid=398&id=52&context=membership&selectedChild=member"
Can anyone help please? how to fix this?