What gameplay feature is this bug affecting?
Portal Opening

What's the issue? Please include any error messages you receive and as much detail as possible.
I am unable to surrender items to Nirah in order to open a portal. Every time I try, I get the following error:
This page isn’t working
www.lioden.com is currently unable to handle this request.
HTTP ERROR 500

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
https://www.lioden.com/manticora.php

Any screenshots you can provide us with?
https://i.imgur.com/tQex430.png
https://i.imgur.com/ImX39iU.png

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I get that error every time I click the surrender items button