I have a system as shown in the picture. y is a scalar defined in the function(also shown in picture).

However I have received such errors. Why is this happening?
Error in port widths or dimensions. Invalid dimension has been specified for ‘input port 2’ of ‘slxlx/Add’.
Error in port widths or dimensions. ‘output port 1’ of ‘slxlx/Transfer Fcn’ is a one dimensional vector with 1 elements.I have a system as shown in the picture. y is a scalar defined in the function(also shown in picture).

However I have received such errors. Why is this happening?
Error in port widths or dimensions. Invalid dimension has been specified for ‘input port 2’ of ‘slxlx/Add’.
Error in port widths or dimensions. ‘output port 1’ of ‘slxlx/Transfer Fcn’ is a one dimensional vector with 1 elements. I have a system as shown in the picture. y is a scalar defined in the function(also shown in picture).

However I have received such errors. Why is this happening?
Error in port widths or dimensions. Invalid dimension has been specified for ‘input port 2’ of ‘slxlx/Add’.
Error in port widths or dimensions. ‘output port 1’ of ‘slxlx/Transfer Fcn’ is a one dimensional vector with 1 elements. add, matlab, simulink, sum, dimension, width MATLAB Answers — New Questions

​