Google App Engine handler won't work unless a catch all handler is set

Question

I'm struggling to setup URL handlers in the handlers section of my app.yaml file for my standard engine php application.

Following code makes both mydomain.com/abc.php and mydomain.com display the abc.php file in my dist folder:

handlers:
- url: /(abc\.php)
  script: dist/abc.php

- url: /(.*)
  script: dist/abc.php

However, I don't want a catch all handler, so I removed it so only 1 handler exists:

handlers:
- url: /(abc\.php)
  script: dist/abc.php

Now when I go to mydomain.com/abc.php, I'm getting a 500 error:

How can I make a targeted URL work on GAE without using a handler for all URL's?

Answer 1

My app.yaml file contained resources:

manual_scaling:
  instances: 1
resources:
  cpu: 1
  memory_gb: 1
  disk_size_gb: 10

Since this isn't supported by the App Engine Standard environment, simply commenting out this code resolved the issue.