PHP脚本导致缺少必需的重定向uri错误

I've been going at this for about an hour and a half now and I just can't seem to figure out composer! I'm trying to install the Google APis php client library so that I can access the calendar api. I am following PHP Quickstart

I think everything is set up correctly but when I get to the final step PHP quickstart.php git bash gives me these errors. (BELOW)

This is my file structure (BELOW)

By the way I do have the autoloader.

Your error message has nothing to do with composer

Missing required redirect uri

Redirect URI is set in the Google developer console for your project it should also be included in the JSon file you downloaded. You should go back to your tutorial and check Step 1: Turn on the Google Calendar API. you missed something in there.