Some invisible chars in the output to the file

[yunpengxiao]

I’m stuck on Stage #un3

I think I did all correct but there is some invisible chars in the file output, the output between cat and ls has a strange char:

I commited my latest code.

Thanks,

[andy1li]

Hi @yunpengxiao, thanks for highlighting the issue! We’ll investigate it and keep you updated with any progress.

[andy1li]

We’ve fixed the issue in this PR. Thanks again for highlighting the issue! @yunpengxiao