API logs error when privacy policies doc contains no privacy policies

[dianabarsan]

Describe the bug
When the privacy policies doc lacks the privacy_policies property, API logs an error. However this error is not critical and does not inform the user of what they should do.
An empty privacy policies doc can come from an incomplete, but not incorrect configuration.

This creates noise and confusion, and gets reported as the reason why API crashed.

To Reproduce
Steps to reproduce the behavior:

1. In your config folder, create a privacy-policies.json file, but leave it empty.
2. Upload thid config.
3. Relaunch API.
4. See error

Expected behavior
This should be logged as a warning, or inform the user on what to do.

Logs

2024-10-11T08:30:29.645 ERROR: Error retrieving privacy policies: Error: Invalid privacy-policies doc: missing required "privacy_policies" property
    at /service/api/src/services/privacy-policy.js:25:15
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Promise.all (index 3)
    at async getLoginPageContents (/service/api/src/generate-service-worker.js:53:10)
    at async writeServiceWorkerFile (/service/api/src/generate-service-worker.js:101:23)
    at async Object.run (/service/api/src/generate-service-worker.js:154:5)
    at async /service/api/server.js:91:5 {
  [stack]: 'Error: Invalid privacy-policies doc: missing required "privacy_policies" property\n' +
    '    at /service/api/src/services/privacy-policy.js:25:15\n' +
    '    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n' +
    '    at async Promise.all (index 3)\n' +
    '    at async getLoginPageContents (/service/api/src/generate-service-worker.js:53:10)\n' +
    '    at async writeServiceWorkerFile (/service/api/src/generate-service-worker.js:101:23)\n' +
    '    at async Object.run (/service/api/src/generate-service-worker.js:154:5)\n' +
    '    at async /service/api/server.js:91:5',
  [message]: 'Invalid privacy-policies doc: missing required "privacy_policies" property'
} 

Environment

• App: api
• Version: 4.0.0