Need to upgrade OJS (open journal system) site from Current version: 184.108.40.206 to the latest version: 220.127.116.11. The current website is running fine except for one issue that is the author cannot complete the submission process. We hope that the successful upgrade process will resolve this issue.
The freelancer should be an expert in OJS site. You may face PHP fatal errors and warnings during the upgrade process. Your job is to successfully upgrade the website from the current version to the latest version( 18.104.22.168). The attachment shows the version the site is currently running on. Good luck for you!