Reverse Image search problem

Trying to search with example curl parameters (with proper file name) just returns `"error": "list index out of range"`

Reproduce the reverse image search request using the example curl parameters and a valid file name, then trace the `list index out of range` error from the API response. The issue is complete when the request no longer raises that error and returns the expected reverse-image search result or a clear validation error.

Written by the indexing model from the issue text.