async_get_widget: Server Error: No module named 'spt'

[listy]

In 4.8 Schema also do not bring dialogs when i try to connect nodes!

Uncaught TypeError: Cannot read property 'getElement' of null
at run_bvr (eval at spt.behavior.run_cbjs (behavior.js?ver=4.8.0.a01:254), <anonymous>:21:22)
at Object.spt.behavior.run_cbjs (behavior.js?ver=4.8.0.a01:259)
at Object.spt.named_events._execute_listeners (events.js?ver=4.8.0.a01:153)
at Object.spt.named_events.fire_event (events.js?ver=4.8.0.a01:224)
at Object.spt.pipeline.drag_connector_action (eval at spt.behavior.run_cbjs (behavior.js?ver=4.8.0.a01:254), <anonymous>:1628:18)
at eval (eval at spt.behavior.run_callback_fn (behavior.js?ver=4.8.0.a01:310), <anonymous>:1:60)
at Object.spt.behavior.run_callback_fn (behavior.js?ver=4.8.0.a01:310)
at HTMLDocument.up_handler (mouse.js?ver=4.8.0.a01:646)