Error 500 During Search

Hi
I have a problem with my ojs 3.2.1.3
I have 3 journal with one instalation of ojs. I get the same problem when i try to search anything in the seacr bar. The message erro is " This page isn’t working
e-journal.stishid.ac.id** is currently unable to handle this request. HTTP ERROR 500"

I try to open error_log in ojs directory and my problem is not show.
i have chek display_errors is on and error_reporting is E-all

i use ojs 3.2.1.3

eror
2021-09-07_09-41-15