Black pages showed in loading articles after update from ojs-3.2.1-4 to ojs-3.4.0-7

After updating from version ojs 3.2.1-4 to Ojs-3.4.0-7 with many issues in journal, the all six last issues shows all the articles without problem, but in the others when the visitors makes click in any article a black page is showed in the browser how result. ¿What is wrong?

Thanks.

Hi @cridum,

Have you checked your PHP error logs? That may give some indication of what is happening behind-the-scenes that is leading to this issue.

-Roger
PKP Team

Hello Roger thanks for your reply.

The error message is this one: (I split it, is all in one line)

Thanks!