i am getting following error when I run Art repair using SPM12. The first three graphs get generated, however, the legend box and fourth graph do not come up [Please check the attachment]. Why is this happening and how should I troubleshoot this? I am using MATLAB_R2017a. 

Generated mask image is written to file ArtifactMask.img.
Adaptive Mask Threshold
1757

Mapping files...: ...done
Calculating globals...: ...done\n
79088 voxels were in the auto generated mask.
Automatic adjustment of movement threshold to 1

Error using legend>process_inputs (line 582)
Invalid argument. Type 'help legend' for more information.
Error in legend>make_legend (line 340)
[autoupdate,orient,location,position,children,listen,strings,propargs] = process_inputs(ha,argin); %#ok
Error in legend (line 294)
make_legend(ha,args(arg:end),version);
Error in art_global (line 432)
legend('x mvmt', 'y mvmt', 'z mvmt','pitch','roll','yaw',0);
Error while evaluating UIControl Callback.