HTTP ERROR 500 when viewing a page with an article


I installed OJS version 3.4.0-5 on the journal website. There’s a problem.

I’m adding articles. When viewing the entire log, everything displays well.

But when I click on the article itself to view only one publication on the page in detail, the page does not open. It gives an HTTP ERROR 500 - The page is unavailable.

PHP error logs

What could be wrong, and how can I fix it?


Hi @a.yurchenko,

I believe this is the following error:

It’s already been fixed in Github, but not yet released. You can fix it in your installation by either disabling assertions in your PHP configuration, or disabling the “recommend by similarity” plugin, or by appying the stable-3_4_0 commit at this link.

Alec Smecher
Public Knowledge Project Team

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Thank you! The problem is fixed. It was exactly that!
Turned off the “recommend by similarity” plugin

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