Error validating test apps: 'version'

I'm trying to get contentctl to download apps from splunkbase, but there is no documentation as to how to do that, so I have to keep guessing, but I'm running out of ideas.

Here is my command: contentctl test --verbose mode:all

Here is my contentctl.yml:

splunk_api_username: someone@someone.com
splunk_api_password: hihi
version: 20240925.16.111
path: .
app:
  uid: 42123
  title: 'MyAPP'
  appid: myapp
  version: 20240925.16.111
  description: "MyAPP"
  prefix: MA
  label: 'MyAPP'
  author_name: "MyAPP"
  author_email: MyAPP@MyAPP.com
  author_company: "MyAPP"
verbose: false
enrichments: false
build_app: true
build_api: false
build_ssa: false
build_path: dist
mode: {}
post_test_behavior: pause_on_failure
enable_integration_testing: false
apps:
- uid: 263
  title: Enterprise Security
  appid: Splunk_Enterprise_Security
  version: 7.3.2
  description: Splunk Enterprise Security
- uid: 1621
  title: Splunk Common Information Model (CIM)
  appid: Splunk_SA_CIM
  version: 5.2.0
  description: Splunk Common Information Model
  hardcoded_path: https://attack-range-appbinaries.s3.us-west-2.amazonaws.com/Latest/splunk-common-information-model-cim_520.tgz
- uid: 5579
  title: Splunk Add-on for CrowdStrike FDR
  appid: Splunk_TA_CrowdStrike_FDR
  version: 1.5.0
  description: description of app
  hardcoded_path: https://attack-range-appbinaries.s3.us-west-2.amazonaws.com/Latest/splunk-add-on-for-crowdstrike-fdr_150.tgz
container_settings:
  leave_running: true
  num_containers: 1
  full_image_path: registry.hub.docker.com/splunk/splunk:latest

I get this error:

Error validating 'contentctl.yml':
Error validating test apps: 'version'

It doesn't matter if I remove the version key from the contentctl.yml file, the error is the same.

Is this a bug or I'm doing something wrong?

Start by reproducing the error with contentctl test --verbose mode:all and the supplied contentctl.yml, then trace the validation of the apps entries and their version fields. Determine whether the documented configuration is accepted or whether the validation error needs correction; done means the example either validates successfully or reports the actual configuration problem clearly.