fMRI preprocessing error

Hello all

I'm new to conn and fMRI connectivity analysis (I've benn working with resting state fMRI)
I'm trying to process 25 subjects and the following error keeps popping up in the pre processing step (functional realignment and unwrap)

ERROR DESCRIPTION:

Undefined function 'cfg_getfile' for input arguments of type 'cell'.
Error in spm_select (line 115)
cfg_getfile('regfilter', 'mesh', {'\.gii$'});
Error in spm_select (line 110)
spm_select('regfilter');
Error in spm_jobman (line 173)
spm_select('init');
Error in conn_setup_preproc (line 932)
spm_jobman('initcfg');
Error in conn (line 1081)
ok=conn_setup_preproc('',varargin{2:end});
Error in conn_menumanager (line 120)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
CONN18.b
SPM12
Matlab v.2019b
project: CONN18.b

Thanks!