Blank page upon clicking on question

Hello, hope you can help me with this. When i click on a question within the question list page, sometimes the page doesn’t load and it shows a white blank page. But it loads correctly after I request a page.

http://staging.havehalalwilltravel.net/traveller-forum/

Click on any question within the link. Might need to try a few times to replicate the problem.

Thanks!