```

fix(embeddings): handle empty API key in LiteLLMEmbeddingEngine

- Add conditional check for empty API key to prevent authentication errors- Set default API key to "EMPTY" when no valid key is provided- This ensures proper fallback behavior when API key is not configured
```

cognee/infrastructure/databases/vector/embeddings/LiteLLMEmbeddingEngine.py

@@ -134,7 +134,7 @@ class LiteLLMEmbeddingEngine(EmbeddingEngine):
                         litellm.aembedding(
                             model=self.model,
                             input=text,
-                            api_key=self.api_key,
+                            api_key=self.api_key if self.api_key and self.api_key.strip() != "" else "EMPTY",
                             api_base=self.endpoint,
                             api_version=self.api_version,
                         ),