Hello Freesurfer community

I am trying to do a fMRI analysis and I am following the tutorial of FSFAST, but when I try to execute preproc-sess command I get a error

if: Expression Syntax

I used this command:

 preproc-sess -s resting -fsd bold -stc up -surface fsaverage lhrh -mni305 -fwhm 5 -per-run 

Also I attach the output log.

My Freesurfer version is 6.0.0

My OS CentOS Linux release 7.4.1708 (Core)

Thank you.

Raul