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Dear Developer,
        I am learning the FaFast to analyse the fMRI data. I have a question about the sunjectname file, I created a text file under the Sess06 file, like this:

The content of the subjectname file is 'f06'.

 I created a file called  fsl_bold including my anatomical data 

Then, I runned this preprocessing command:
          export SUBJECTS_DIR=/Users/qianqianyu/Desktop/fsl_bold
     cd /Users/qianqianyu/Desktop/preject_try
     preproc-sess -s Sess06 -vol-fwhm 4 -fsd bold -per-run

There was a error!!!
I do't know how to solve this error, so I hope I can get your help. 
Beat wishes to you! Looking forward to your reply£¡

                                                                                      qianqianyu
2019.11.12