Can't Access Plugins & importexport

Hello i’ve problem here , after we move to the new server .
The site its ok , but several link cant access .

This link cant be Access :

http://jmbr.ppm-school.ac.id/index.php/jmbr/manager/importexport
http://jmbr.ppm-school.ac.id/index.php/jmbr/manager/plugins

Im meet HTTP ERROR 500 .
Can anyone help me .

Hi @wahyu_anggana,

Which of our applications and what version are you using? (Please include this information in your posts.)

Check your PHP error log for details.

Regards,
Alec Smecher
Public Knowledge Project Team