Hello everybody,
I need your wisdom, since I am new in fmriprep. 
I get this error after running a basic script (preproc for one participant) via docker in a virtual linux environm (virtualbox). The dataset consists of 2 sessions per subject.
fmriprep-20.2.6
I RAN:
fmriprep-docker $bids_root_dir $bids_root_dir/derivatives
participant
–participant-label $subj
–skip-bids-validation
–md-only-boilerplate
–fs-license-file $HOME/Documents/license.txt
–fs-no-reconall
–output-spaces MNI152NLin2009cAsym:res-2
–stop-on-first-crash
–verbose\
It runs but after some steps gives me this error (see screenshot & below)
Error on “fmriprep_wf.single_subject_ao87_wf.func_preproc_ses_002_rev_enc_wf.ds_report_validation” (/tmp/work/fmriprep_wf/single_subject_ao87_wf/func_preproc_ses_002_rev_enc_wf/ds_report_validation) 211125-20:30:59,755 nipype.workflow ERROR: Node ds_report_validation failed to run on host
-The html file generated in the derivatives folder contains this last line:
# Errors
Node Name: fmriprep_wf.single_subject_ao87_wf.func_preproc_ses_002_rev_enc_wf.ds_report_validation
Do you have any idea why do I get this error?
Please note that I have run before this preproc for a single subject using an open dataset and it worked.
Thank you in advance
Best,
Pan