title: Opencart Internal Server Error
body: <p>I have a problem with opencarted payment modules. I use version 3.0.0.0 and all modules are working fine except the ones that are in payment section. I get an Internal Server Error which at logs says: 
  GET /admin/index.php?route=extension/extension/payment&amp;user_token=LpWyMlFDTymqDs4I6Q1iUwUV6sI3VCet HTTP/1.0 <a href="http://eshop.capsport.gr/admin/index.php?route=marketplace/extension&amp;user_token=LpWyMlFDTymqDs4I6Q1iUwUV6sI3VCet" rel="nofollow noreferrer">http://eshop.capsport.gr/admin/index.php?route=marketplace/extension&amp;user_token=LpWyMlFDTymqDs4I6Q1iUwUV6sI3VCet</a>    Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36   303 Apache access
  2017-07-12 10:27:38 Warning 94.70.255.140       mod_fcgid: stderr: PHP Fatal error: Can't use method return value in write context in /var/www/vhosts/paokbcstore.gr/eshop.capsport.gr/admin/controller/extension/payment/pp_express.php on line 1282, referer: <a href="http://eshop.capsport.gr/admin/index.php?route=marketplace/extension&amp;user_token=LpWyMlFDTymqDs4I6Q1iUwUV6sI3VCet" rel="nofollow noreferrer">http://eshop.capsport.gr/admin/index.php?route=marketplace/extension&amp;user_token=LpWyMlFDTymqDs4I6Q1iUwUV6sI3VCet</a>                Apache error
  2017-07-12 10:28:34 Warning         RSA server certificate CommonName (CN) `Parallels Panel' does NOT match server name!?
  Any possible solutions?</p>