In my second level analysis, results for seed to voxel is successful (generates results) but ROI to ROI is unsuccessful.
The error message that appears for ROI to ROI analysis is :

ERROR DESCRIPTION:

Index exceeds array bounds.
Error in conn_process (line 5172)
newneffects=CONN_x.Results.saved.nsubjecteffects{ncontrast};
Error in conn_process (line 61)
case 'results_roi', [varargout{1:nargout}]=conn_process(17,varargin{:});
Error in conn (line 9522)
CONN_h.menus.m_results.roiresults=conn_process('results_ROI',CONN_x.Results.xX.nsources,CONN_x.Results.xX.csources);
Error in conn (line 7636)
else conn gui_results_r2r;
Error in conn_menumanager (line 121)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
CONN19.b
SPM12 + DEM FieldMap MEEGtools
Matlab v.2018b
project: CONN19.b

How do I get ROI to ROI analysis to work? and does anyone know what this error means?

Background information:

I'm using FMRIprep preproceessing data, denoising and first level analysis worked out well.
I'm only using ROIs from the ones provided in CONN

I'm only using ROIs from those that are provided in CONN