How do I deal with the Error: "Undefined function 'importfile' for input arguments of type 'char'."?

I got this error after importing text data by generating a function and entered in command window something like "matrix=importfile('data matlab.txt', 2, 7)".

The current folder is where the text file matlab.txt is stored (on the desktop of my PC).

[Adam]

Do you have a function called importfile? Is it on your path? If either one is not the case then that would be the answer.