Unrecognized function or variable 'circ_kappa'

[Learningtogo]

Hi there, any insights/feedback on why these errors pop up while running MGRP2IDX? Thank you!

These the code:
multigroup = (iscell(group) && size(group,1)==1) || ...
(isnumeric(group) && ~isvector(group) && ~isempty(group))||...
(isdatetime(group) && ~isvector(group) && ~isempty(group))||...
(isduration(group) && ~isvector(group) && ~isempty(group));
if (~multigroup)
[ogroup,gname] = statslib.internal.grp2idx(group);
maxgroup = length(gname);
glabel = gname;

These the errors:
Error in statslib.internal.mgrp2idx
[ogroup,gname] = statslib.internal.grp2idx(group);

Error in internal.stats.mgrp2idx
[varargout{1:nargout}] = statslib.internal.mgrp2idx(group,varargin{:});

Error in mgrp2idx
[varargout{1:max(1,nargout)}] = internal.stats.mgrp2idx(varargin{:});

Error in gscatter
[g,gn,ignore1,ignore2,maxgrp] = mgrp2idx(g,size(x,1),','); %#ok