Meica.py WARNING: If you are performing spatial transformations on an oblique dset

Dear all,

I run multi-echo EPI sequence on 7T
The scanner output was 800 dicoms for 4 TEs (9.5 24.71 39.92 55.13),
I sorted them into 4 folders and use dcm2niigui (‘compressed FSL (4D NiftI’)

I get an error when using meica.py
*+ WARNING: If you are performing spatial transformations on an oblique dset,
or viewing/combining it with volumes of differing obliquity,
you should consider running:
3dWarp -deoblique

I run: 3dWarp -deoblique input.nii.gz (to each TE) and got .BRIK and .HEAD files… what should i do?

Thank you!