TypeError using Topaz denoise

[bencreekm]

I am using topaz denoise on my own dataset following the denoising tutorial. I keep getting an error that I am not sure how to fix.
Do you know what may be going wrong? Thanks!

version: Topaz 0.2.4

My command is: topaz denoise -a denoised/training_data/partA/ -b denoised/training_data/partB/

The error is:
Traceback (most recent call last):
File "/usr/local/EMAN2/eman2-sphire-sparx/envs/topaz/bin/topaz", line 11, in
load_entry_point('topaz-em==0.2.4', 'console_scripts', 'topaz')()
File "/usr/local/EMAN2/eman2-sphire-sparx/envs/topaz/lib/python3.6/site-packages/topaz/main.py", line 148, in main
args.func(args)
File "/usr/local/EMAN2/eman2-sphire-sparx/envs/topaz/lib/python3.6/site-packages/topaz/commands/denoise.py", line 535, in main
if not os.path.exists(args.output):
File "/usr/local/EMAN2/eman2-sphire-sparx/envs/topaz/lib/python3.6/genericpath.py", line 19, in exists
os.stat(path)
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType

[bencreekm]

Update: This issue does go away if you include the -o flag