Transfer ojs 3 journals to new domain

Dear sir,
We need help migrating our journals to new domain. We have generated xml files for issues and articles using Native XML Plugin.
The current version is ojs 3.1.2.
We are facing problem importing the xml files to new domain.
Error log shows the following.
[05-Jan-2023 14:10:34 UTC] PHP Notice: Trying to access array offset on value of type null in /home/directory/ on line 1927
[05-Jan-2023 14:41:34 UTC] PHP Deprecated: Function get_magic_quotes_runtime() is deprecated in /home/directory/ on line 1307

Kindly guide.
Kindest regards,

Hi @manimughal,

Please note that version of OJS that you’re using is no longer supported by PKP. I recommend that you upgrade to the newest version of OJS, as it is possible that your issue will be resolved by upgrading. However, other community members may wish to offer assistance.

Upgrading instructions are available in the PKP Administrator’s Guide and as part of our [Upgrade Guide] (

Information about the latest version of OJS can be found on the PKP Website

PKP Team