[Freesurfer] mri_glmfit ERROR no voxels found

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Hello FreeSurfer Developers,

I'm attempting to do a Surface-based analysis on Freesurfer while projecting MTR MRI sequences. I have followed all the steps explained in the group analysis tutorials, and the mri_preproc seems to have ran correctly but once the mri_glmfit is launched i get the following error :

Computing normalized matrix Normalized matrix condition is 38.1502 Matrix condition is 1.78431e+12 Found 149926 points in label. Pruning voxels by thr: 1.175494e-38 Found 0 voxels in mask ERROR: no voxels found in the mask make sure at least one voxel has a non-zero value for each input

I've searched the list but didn't find an answer. Does anyone have any clue on how to solve this problem ?

Thank you very much for your help,

Marine