The 404 error "Resource not found" typically indicates that the endpoint or resource you are trying to access was not found. Here are a few suggestions to troubleshoot the issue:
Verify the endpoint URL: Double-check that the endpoint URL you are using in your Python script matches the correct endpoint for the Azure Form Recognizer API. Ensure that there are no typos or missing segments in the URL.
Check the API key or authentication credentials: Confirm that you are using the correct API key or authentication credentials to authenticate your requests. The API key should be valid and associated with the Azure Form Recognizer service.
Validate the resource existence: Ensure that the resource (such as the Form Recognizer service) is provisioned and accessible from the virtual machine. Check the Azure portal to verify the status of the resource and make sure it is running and accessible.
Verify network connectivity: Check if the virtual machine has outbound network connectivity to the Azure Form Recognizer service. Ensure that there are no network restrictions or firewalls blocking the outbound requests from the virtual machine.
Debugging headers and logs: Enable verbose logging or capture the request and response headers to get more details about the request being sent from the Python script. This can help identify any potential issues or discrepancies in the requests being made.