when executor_type="funcx" failing with ValueError: The tasks queue is empty, no tasks were submitted for training!

Getting error on quickstart_pytorch.py tutorial with executor_type="funcx":
Traceback (most recent call last):
File "flox/examples/quickstart_pytorch/quickstart_pytorch.py", line 130, in
main()
File "flox/examples/quickstart_pytorch/quickstart_pytorch.py", line 126, in main
flox_controller.run_federated_learning()
File "/home/edg4/FLoX/flox/controllers/MainController.py", line 563, in run_federated_learning
tasks = self.on_model_broadcast()
File "/home/edg4/FLoX/flox/controllers/MainController.py", line 371, in on_model_broadcast
raise ValueError(
ValueError: The tasks queue is empty, no tasks were submitted for training!

Start with flox/examples/quickstart_pytorch/quickstart_pytorch.py around main() and trace the funcx path into flox/controllers/MainController.py, especially on_model_broadcast() near lines 371 and 563. Run the quickstart with executor_type="funcx" and determine why the task queue is empty; done means the tutorial submits training tasks without raising this ValueError.

Written by the indexing model from the issue text.