Update app.py

app.py

@@ -337,8 +337,9 @@ channel_id = "UCsv3kmQ5k1eIRG2R9mWN"  # iCodeGuru
 BASE_URL = "https://icode.guru"
 
 groq_client = Groq(api_key=GROQ_API_KEY)
-embed_model = SentenceTransformer("sentence-transformers/all-MiniLM-L6-v2")
-embedding_function = SentenceTransformerEmbeddingFunction(embed_model)
+from chromadb.utils.embedding_functions import SentenceTransformerEmbeddingFunction
+
+embedding_function = SentenceTransformerEmbeddingFunction("all-MiniLM-L6-v2")
 
 chroma_client = chromadb.Client()
 collection = chroma_client.get_or_create_collection("icodeguru_knowledge", embedding_function=embedding_function)