Fix RateLimitError

✅ Solution

RateLimitError in litellm usually arises from exceeding the API provider's rate limits, such as requests per minute/day. Implement retry logic using `litellm.retry` with exponential backoff and consider utilizing fallback providers in your `litellm.Router` configuration to distribute load and avoid hitting limits with a single provider. Also, check and adhere to the specific rate limit guidelines of the API provider being used.