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Hi! I have a DWI workflow that has run smoothly in Nipype version 1.1.8, utilizing mrTrix nodes including DWIDenoise. I upgraded to version 1.2.0 so I could incorporate MRDeGibbs (Gibbs ringing removal), but the denoising node generated the following error after running: "TypeError: expected str, bytes or os.PathLike object, not _Undefined". DWIBiasCorrect also generated same error. I downgraded to version 1.1.8 again, removed the Gibbs node, and everything ran smoothly. Thanks for any help!
Script/Workflow details
Node
#Denoise DWI data using local PCA correction - mrTrix3
denoise = Node(mtx.DWIDenoise(),
name='denoise')