I'm getting the same issue. Updated WC, WP, ATUM to latest. Looks to be a JS error.
Uncaught Error: cannot call methods on pointer prior to initialization; attempted to call method 'open'
at Function.error (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.8:2)
at HTMLDivElement.<anonymous> (load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,jquery-ui-widget,jquery-ui-position,wp-pointer,svg-painter,heartbeat,wp-auth-check,jquery-ui-core&ver=4.9.8:14)
at Function.each (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.8:2)
at a.fn.init.each (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.8:2)
at a.fn.init.a.fn.(/wp-admin/anonymous function) [as pointer] (https://**/wp-admin/load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,jquery-ui-widget,jquery-ui-position,wp-pointer,svg-painter,heartbeat,wp-auth-check,jquery-ui-core&ver=4.9.8:14:1857)
at Object.beforeSend (admin.php?page=atum-stock-central:143)
at Function.ajax (load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils&ver=4.9.8:4)
at HTMLDivElement.close (admin.php?page=atum-stock-central:133)
at a.(/wp-admin/anonymous function).(anonymous function)._trigger (/wp-admin/load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,jquery-ui-widget,jquery-ui-position,wp-pointer,svg-painter,heartbeat,wp-auth-check,jquery-ui-core&ver=4.9.8:14:6177)
at a.(/wp-admin/anonymous function).(anonymous function).close (https://***/wp-admin/load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,jquery-ui-widget,jquery-ui-position,wp-pointer,svg-painter,heartbeat,wp-auth-check,jquery-ui-core&ver=4.9.8:26:3269)