Spreads on Raspberry Pi 4

[elbourne]

Can Spreads run on a Raspberry Pi 4? If so, I may need a little help.

I am wanting to build me a book scanner. I bought a Raspberry Pi 4. I went ahead and got the 8GB version in a CanaKit that comes with cables, case, the OS already pre-installed on a microSD card... the whole works. I plugged it all in, connected it to my network, ran the configuration, and was even able to SSH into it from my PC. At this point I was pumped!

I also picked up 2 Cannon ELPH 180 Cameras. Using the STICK tool I got CHDK onto 2 32 GB SD cards and popped them into the cameras. They booted up the CHDK firmware and everything looks good. I disabled the USB Remote thing in the menu.

I plugged the cameras into the Raspberry Pi via USB and powered them on.

Now, in a terminal window on the Raspberry Pi, I did:

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$ pip install spreads

A bunch of stuff happened and I thought it was all good.

Then I did:

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$ spread configure

That's when I hit the brick wall. I do not know what to do with this:

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spreads encountered an error:
Traceback (most recent call last):
  File "/home/pi/.local/bin/spread", line 39, in <module>
    cli.main()
  File "/home/pi/.local/lib/python2.7/site-packages/spreads/cli.py", line 410, in main
    setup_plugin_config(config)
  File "/home/pi/.local/lib/python2.7/site-packages/spreads/plugin.py", line 344, in setup_plugin_config
    pluginmanager = get_pluginmanager(config)
  File "/home/pi/.local/lib/python2.7/site-packages/spreads/plugin.py", line 316, in get_pluginmanager
    name_order=True)
  File "/home/pi/.local/lib/python2.7/site-packages/stevedore/named.py", line 81, in __init__
    verify_requirements)
TypeError: _load_plugins() takes exactly 4 arguments (5 given)

I hope someone can help. Meanwhile, I am going to go see if I can make a cradle out of a cardboard box.