Uncaught Error: Call to a member function isRunning

Getting this error notification after updating duplicator:

Uncaught Error: Call to a member function isRunning

Fatal error: Uncaught Error: Call to a member function isRunning() on string in /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/views/packages/main/packages.php:167 Stack trace: #0 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/classes/package/class.pack.php(740): tablePackageRow(‘O:11:”DUP_Packa…’)

Stack trace:
#0 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/classes/package/class.pack.php(740): tablePackageRow(‘O:11:”DUP_Packa…’)
#1 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/views/packages/main/packages.php(239): DUP_Package::by_status_callback(‘tablePackageRow’, Array, false, 1, ‘id DESC’)
#2 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/views/packages/main/controller.php(60): include(‘/home/MYHOSTUSER/…’)
#3 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/views/packages/controller.php(83): include(‘/home/MYHOSTUSER/…’)
#4 /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/duplicator.php(370): include(‘/home/MYHOSTUSER/…’)
#5 /home/MYHOSTUSER/public_html/wp-includes/class-wp-hook.php(286): duplicator_get_menu(”)
#6 /home/MYHOSTUSER/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->appl in /home/MYHOSTUSER/public_html/wp-content/plugins/duplicator/views/packages/main/packages.php on line 167

any ideas?

Thanks