[BUG] Ensemble transformer hangs when run with multiprocessing turned on

[katieb1]

Describe the bug
When running the ensemble transformer with multiprocessing turned off, it runs very quickly. However, if I have multiprocessing turned on, then it hangs forever. I think it's dask that is causing the issue and wondering if the ensemble transformer needs to use dask? Or if there can be an option to turn off dask in the ensemble transformer options?

I want to be able to run the ensemble transformer in the same pipeline as the apply model transformer, but right now I need to separate them because the apply model transformer needs multiprocessing turned on.

To Reproduce

I can send you the library where I'm experiencing this issue, although it is quite large.

Steps to reproduce the behavior:

1. Turn on multiprocessing
2. Run one of the "Build Model" scenarios

Software versions:

• SyncroSim: 3.1.28
• WISDM: 2.4.1 (but also experiencing in dev versions)