OCS error when displaying list paper

We have a problem with the conference system. In the part of my conference, all the papers listed could not be displayed, only a few papers appeared.

This problem occurs because one of our colleagues deleted the section on the type of conference.
Please help me. How to resolve this problem. So the data can be displayed again.
Regards

Hardi

List%20confrence List%20abstract%20not%20all%20showing

Hi @hardi,

Check your PHP error log for details.

Regards,
Alec Smecher
Public Knowledge Project Team