Found unsupported class for variable using function 'coder.load'. Sparse matrix found at 'mod.model1.SVs' is unsupported.

hello , i work in matlab coder , i'm trying to load a file that contains several sub files ;in matlab worked correct but when i use matlab coder i can't and i have a problem " Found unsupported class for variable using function 'coder.load'. Sparse matrix found at 'mod.model1.SVs' is unsupported.

Use the command 'whos -file E:\work1\model1.mat' to view the variables in the MAT file. "