Normalize to Smooth not working

For some reason, the normalize to smooth is not working. Normalize files are fine, however, this error pops up.

ValueError: Smooth requires a value for input ‘in_files’. For a list of required inputs, see

Though I have checked and it is connected the same way in this tutorial

Thanks in advance!

Hi @Lucky_Lucy

What version of Nipype are you using? Could you verify that the file created by Normalize exists? If a crashfile is generated, could you share the contents?