Fix bug in zip file

[Caffetaria]

Description

On clicking the Download option on the Configure bundled code page, a zip file is downloaded.
However the file does not open after it is downloaded.

Expected Behavior

The zip file opens after it is downloaded on the computer.

Actual Behavior

The zip file does not open and produces a new copy of the same file each time it is clicked.

Steps to Reproduce the Problem

1. Click on Create Demo in the sidebar.
2. Fill out and submit the data in the Register application step. This will take you to the Configure bundled code page.
3. On the Configure bundled code page, click on the the Download button.
4. This will download a zip file on your computer.
5. Click on the zip file to open it. You will find that it does not open and a new copy of the zip file is created each time you click on it.

Screenshots

The following error is produced in the terminal on trying to open the zip file -

Thanks!

[techytushar]

You should claim this task: https://codein.withgoogle.com/tasks/5564398660747264/ and also report this there.

[Caffetaria]

@techytushar Thank you. However, I can't claim the task at https://codein.withgoogle.com/tasks/5564398660747264/ as it is listed as a beginner task and I've already finished off the limit of 2 beginner tasks.

[ghost]

#285