NameError without a quine

NameError without a quine is an esolang made by Unname4798. It is similar to NameError, except when you type this:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name '[command]' is not defined

It outputs:

Traceback (most recent call first):
  File "<stdin>", line 1, in <module>
JustAnError: Why did you imitate the NameError?