Upgrade 2.3.6 to 2.4.8-3 error

I’m trying to upgrade OJS 2.3.6 to 2.4.8-3

I used pacth file over ojs installed folder,
changed “installed option” on config.inc.php,
opened home page and click on upgrade option,
but received this error:

Fatal error: require_once(): Failed opening required
‘plugins/generic/rem/ResourceMap.inc.php’
(include_path=’.;C:\xampp\htdocs\Jsc\ojs/classes;C:\xampp\htdocs\Jsc\ojs/pages;C:\xampp\htdocs\Jsc\ojs/lib/pkp;C:\xampp\htdocs\Jsc\ojs/lib/pkp/classes;C:\xampp\htdocs\Jsc\ojs/lib/pkp/pages;C:\xampp\htdocs\Jsc\ojs/lib/pkp/lib/adodb;C:\xampp\htdocs\Jsc\ojs/lib/pkp/lib/phputf8;C:\xampp\htdocs\Jsc\ojs/lib/pkp/lib/pqp/classes;C:\xampp\htdocs\Jsc\ojs/lib/pkp/lib/smarty;C:\xampp\php\PEAR’)

in C:\xampp\htdocs\Jsc\ojs\lib\pkp\includes\functions.inc.php on line 32

i didn’t find info about it on forum…

Hi @Preca,

What is the rem plugin? I’m not familiar with it.

Regards,
Alec Smecher
Public Knowledge Project Team

I don’t know, it was installed before me.
Is it possible need to upgrade plugin before OJS?
Thanks

Hi @Preca,

That’s third-party code and I’m not sure what it does or where it came from; the error message is related to it. I’m afraid I can’t suggest a resolution without knowing more about it.

Regards,
Alec Smecher
Public Knowledge Project Team