Deployment Failure: Failed Opening Required '/var/app/ondeck/vendor/autoload.php'

I've come across a problem that I really don't understand. I've developed a local composer package for my Laravel app (based on an existing one that didn't do exactly what I needed it to), and now I can no longer successfully deploy my app to my AWS Elastic Beanstalk instance.

I believe my new local composer package was created correctly: I took the original composer package, moved it to a new folder called "packages" in my Laravel app root. I added a repositories entry to my composer.json that pointed to it:

"repositories": [
        "type": "path",
        "url": "packages/konsulting/justgiving-api-sdk"

I then ran composer require konsulting/justgiving-api-sdk @dev and the local package was installed successfully. It works locally with no issues.

But now deploy to EB, I get the following error:

Activity execution failed, because: PHP Warning: require(/var/app/ondeck/vendor/autoload.php): failed to open stream: No such file or directory in /var/app/ondeck/artisan on line 18 PHP Fatal error: require(): Failed opening required '/var/app/ondeck/vendor/autoload.php' (include_path='.:/usr/share/pear7:/usr/share/php') in /var/app/ondeck/artisan on line 18

What could be causing this issue? Literally nothing but this composer package (which works locally) is different.

I've tried composer dumpautoload and composer update.



The problem was simple, but confusing. I just needed to disable symlinking in repositories {}.

"options": {
    "symlink": false

Works fine now!