Laravel 8 - build failed in google app engine flexible environment

[Bilal Haidar]

Hello,

I have a Laravel PHP app with the following:

- app.yaml

```

runtime: php
env: flex

runtime_config:
document_root: public
whitelist_functions: proc_open
automatic_scaling:
min_num_instances: 1
max_num_instances: 1
resources:
cpu: 1
memory_gb: 0.5
disk_size_gb: 10
env_variables:
# See substitution variables for Google Cloud Build Trigger

```

- cloud_build.yaml

```

steps:
  - name: node:14.0.0
    entrypoint: npm
    args: ['install']
  - name: node:14.0.0
    entrypoint: npm
    args: ['run', 'prod']
  - name: 'gcr.io/cloud-builders/gcloud'
    args: ['app', 'deploy', '--project', '$PROJECT_ID', '-q', '$_GAE_PROMOTE', '-v', '$_GAE_VERSION']
timeout: '3600s'

```

- composer.json

```

"require": {
"php": "7.3.*",

...

}

```

When the Cloud Build Trigger runs, I get the following error:

```

Step #0: Digest: sha256:1f43a583e4c10b1758647be47b9fb5f9659227ef266978694acbb7981e4ee093

Step #0: Status: Downloaded newer image for gcr.io/gcp-runtimes/php/gen-dockerfile@sha256:1f43a583e4c10b1758647be47b9fb5f9659227ef266978694acbb7981e4ee093

Step #0: gcr.io/gcp-runtimes/php/gen-dockerfile@sha256:1f43a583e4c10b1758647be47b9fb5f9659227ef266978694acbb7981e4ee093

Step #0: + php /builder/create_dockerfile.php create --php73-image gcr.io/google-appengine/php73@sha256:bee53597a0df4167547fd9c2a501484e8c5d03831298f50c1db0e9cdcd915a88 --php72-image gcr.io/google-appengine/php72@sha256:c3f3636b89aab3a83ab288a0108f767a4d56002c9a214b17b5fe93b9ba5f8bbf --php71-image gcr.io/google-appengine/php71@sha256:9d39f66c4e0b7c9a9590ed27373b8c18e79a6cde3dbf48c284ffc5f3fd99d12a

Step #0: [09-Jun-2021 19:06:00 UTC] PHP Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 232

Step #0:

Step #0: Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 232

Step #0: [09-Jun-2021 19:06:00 UTC] PHP Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 232

Step #0:

Step #0: Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 232

Step #0: [09-Jun-2021 19:06:00 UTC] PHP Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 174

Step #0:

Step #0: Warning: array_key_exists() expects parameter 2 to be array, null given in /builder/src/Builder/GenFilesCommand.php on line 174

Step #0: [09-Jun-2021 19:06:00 UTC] PHP Fatal error: Uncaught Error: Unsupported operand types in /builder/src/Builder/GenFilesCommand.php:279

```

[Alexis (Cloud Platform Support)]

Hi,

I think this may be a duplicate post? I see another post here[1] about the same thing

Please mark as resolved if it's for the same question, otherwise please elaborate if it's a different issue. This also helps the community to find the right solutions. Thank you.

[1] https://groups.google.com/g/google-appengine/c/gpDH9AK2WyA

[Bilal Haidar]

Hi Alexis,

I believe it's a bug inside GenFilesCommand.php.

If the app.yaml file has an empty section for example:

env_variables:

There is no check for a null section in this case. I discovered that today after I was pulling my hair out! Now It works. But my app is giving 500 Server Error and I cannot see any log to help me or guide me know what's going on.

Can you help on this?