Keywords: Redmine - Windows - How to - Upgrade
I tried to upgrade Redmine 3.3.0-1 to 4.1.0 by installing redmine 4.1.0 in the new vm and importing the sql file from the old vm to the new vm using phpmyadmin import and export option. I also copied apps\redmine\htdocs\files to the new vm. All administration options such as users, groups, roles are working but when opening a pre-existing issue or creating a new issue in a project, there is an error displayed. Also, projects and trackers are displaying an error. Is there anything else that I should do while migrating.