v1.1.7: require exception for AttributeError

Testing with v1.1.7 I experience a fatal crash on upload. I believe this is related to #14 (closed).

I see this error when running the set_result() function

  File "/mnt/storage/Software/dirigent/calseq/deps/felis/felis.py", line 220, in set_result
    status, message, dict_results["AS"], is_sane, explanation = getattr(
  File "/mnt/storage/Software/dirigent/calseq/deps/felis/core_methods/get_pixelalive.py", line 166, in get_pixelalive
    export_canvas(stitchedcanvas, "D_B({0})_O({1})_H({2})_PixelAliveStitched".format(*numbers), path_results)
  File "/mnt/storage/Software/dirigent/calseq/deps/felis/felis_helpers.py", line 23, in export_canvas
    canvas.Draw()
AttributeError: 'NoneType' object has no attribute 'Draw'

I'm attaching my Felis results folder: 2025-10-17_12-04-23.zip