i am making a face recognition system using HOG and ecoc model but i am getting 2 errors . can someone please tell me what do they mean and how do i get rid of them

Error using classreg.learning.classif.CompactClassificationECOC/predictEmptyX (line 100) X data must have 4680 columns.

Error in classreg.learning.classif.CompactClassificationECOC/predict (line 237) [labels,negloss,pscore,posterior] = predictEmptyX(this,X);

[Image Analyst]

What toolboxes are those classes in? Please list it/them in the Products section below.