If your Jira server log is reporting this error:
No permission scheme is associated with project ‘XXXX’

Try to launch a Groovy script like this to fix the error.
Remember to set the PROJECT_KEY of the project affected, and a PERMISSION_SCHEME existent in your Jira.
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.permission.PermissionSchemeManager;
import com.atlassian.jira.scheme.SchemeManager;
import com.atlassian.jira.scheme.Scheme;
def prList = ComponentAccessor.getProjectManager().getProjectByCurrentKey("PROJECT_KEY")
PermissionSchemeManager permissionSchemeManager = ComponentAccessor.getPermissionSchemeManager();
Scheme permissionScheme = permissionSchemeManager.getSchemeObject("PERMISSION_SCHEME");
permissionSchemeManager.addSchemeToProject(prList, permissionScheme);
We recommed to use plugins like Adaptavist Scriptrunner or MyGroovy to launch this.
Trick by MrAddon






Very helpful tip! Solved the issue I had.
LikeLiked by 1 person