Why do I get that error "Undefined function 'spsGetFullBlockPath' for input arguments of type 'double'"?

I am trying to create a model using MATLAB Simulink R2020a. I got the following error "Undefined function 'spsGetFullBlockPath' for input arguments of type 'double.'" Anyone can help to understand the error message, and How can I fix it?

[Fangjun Jiang]

In what situation did it happen?

[Mohamed Tamazin]

Thank you very much for your reply. I have tried to simulate the attached file. Unfortinatly, I got this error. Can you help to understand this error? I am new in Simulink. I appreciate your help.

Answer 1

[Saurav Chaudhary]

Please go through the following MATLAB answer to get more idea about the possible causes and the solutions that are relevant to this error message:

https://www.mathworks.com/matlabcentral/answers/96005-why-do-i-get-the-error-undefined-function-or-variable