Too many input arguments while saving a struct?

I hace a structs called Cars and I want to load the data.mat struct and after that replace the data.mat with the Cars struct and svae in the same directory as data.mat and replace it with the same name. For example

data. mat --> directory : c:/hello/data.mat

After creating Cars convert to the name data.mat and save in the directory.

save(fullfile(pwd,'data.mat'),'Car')

The problem is this:

Error using dataVisualization>save

Too many input arguments.

[Stephen23]

@Collegue: please show the complete output of this command:

which save -all

[Collegue]

Thank you I got it!