The weird thing with those authentication errors, is that they are (as the name seems to indicate) for either cluster or node connections, not SVM's are seen earlier.
How did you configure your storage systems in VSC configuration, for SVM or cluster?
Besides that the only place I know VSC/SMVI has some bespoke configuration, would be in the override.smvi file (hidden) in the smvi subdirectory of VSC.
/Xander