The error was: 'dict object' has no attribute 'path' during startup

When using the SPLUNK_APPS_URL= environment param, the startup stops with:

deploy1    | TASK [splunk_deployment_server : Infer app filepath] ***************************
deploy1    | fatal: [localhost]: FAILED! => {}
deploy1    |
deploy1    | MSG:
deploy1    |
deploy1    | The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'path'
deploy1    |
deploy1    | The error appears to be in '/opt/ansible/roles/splunk_common/tasks/install_apps.yml': line 45, column 5, but may
deploy1    | be elsewhere in the file depending on the exact syntax problem.
deploy1    |
deploy1    | The offending line appears to be:
deploy1    |
deploy1    |
deploy1    |   - name: Infer app filepath
deploy1    |     ^ here

The docker-compose.yml has the following excerpt:

deploy1:
    networks:
      splunknet:
        aliases:
          - deploy1
    image: ${SPLUNK_IMAGE:-splunk/splunk:latest}
    hostname: deploy1
    container_name: deploy1
    environment:
      - SPLUNK_START_ARGS=--accept-license
      - SPLUNK_ROLE=splunk_deployment_server
      - SPLUNK_APPS_URL=/home/matthew/docker/packages/myapp.tar.gz,/home/matthew/docker/packages/splunk-add-on-for-microsoft-windows_820.tgz,/home/matthew/docker/packages/splunk-add-on-for-unix-and-linux_830.tgz
      - SPLUNK_PASSWORD

Is there anything incorrect with the definition of the path/app locations specified here?

Start with ansible/roles/splunk_common/tasks/install_apps.yml at the reported “Infer app filepath” task, then inspect how SPLUNK_APPS_URL is parsed from the docker-compose.yml environment value. Reproduce startup with the listed comma-separated paths and verify that valid app locations no longer cause the undefined path error.