Update app.py

app.py

@@ -26,6 +26,9 @@ class SentenceTransformerEmbedding:
     def embed_documents(self, texts):
         return self.model.encode(texts, convert_to_tensor=True).tolist()  # Convert to list for compatibility
 
+    def __call__(self, texts):
+        return self.embed_documents(texts)  # Make it callable
+
 @cl.on_chat_start
 async def on_chat_start():
     model = ChatOpenAI(streaming=True)