420036: Knowledge source authentication required

The web crawler received a 401 Unauthorized response when attempting to access the target URL during knowledge ingestion. The target URL requires authentication that the crawler cannot provide.

• The target URL requires login credentials
• The content is behind a paywall or authentication gate
• The target site requires session-based authentication
• API keys or authentication tokens are required

• Ensure the target URL is publicly accessible without authentication
• If the content requires authentication, download it manually and upload as a file instead
• Use the File or Text knowledge source types for authenticated content
• Remove the knowledge source if the content cannot be made publicly accessible
• Review the knowledge source error details in the Twilio Console