I am recently facing an issue with Nintex workflows and Forms, wherein the approvers cannot take any action on the task. Whenever they try to approve or reject it, they get the task locked alert indicating the task is locked. This issue has suddenly sprung up after a recent upgrade performed on Nintex as well as SP 2013.
Is this due to the tasks already being sent to the approvers and the upgrade performed before they worked on it?
Thanks in advance