Please explain what this error is

I’m trying to run a code of an M file and when I press run, it shows me this error.

[Ashis Pandey]

What kind of valid name are they looking for their is your name in this file

Answer 1

[Walter Roberson]

It is not acceptable to have the space then ( then 1 then ) in the file name. You need to save the file into a name that only has letters and numbers and underscore.