Unable to access volunteer functionality

[pranav45]

With Drupal 7.64 CiviCRM version 5.10.4 & civivolunteer version 4.7.31-2.3.1 Created a new event. Under the Volunteer tab in event configuration, there are three buttons Log Volunteer Hours button is working and other two buttons Define Volunteer Opportunities, Assign Volunteers not working after clicking on those buttons nothing happens. Anyone facing the same issues? Here is the thread on stack_exchange