Update app.py

app.py

@@ -275,9 +275,9 @@ async def extract_text_from_mixed_pdf(file_path):
         pdf_text += text
     return pdf_text
 
-# Function to clear the ChromaDB
-async def clear_chroma_db(chroma_instance):
-    await chroma_instance.delete()
+# Function to delete the ChromaDB collection
+async def delete_chroma_collection(chroma_instance):
+    await chroma_instance.delete_collection(name="default")
 
 @cl.on_chat_start
 async def on_chat_start():
@@ -287,8 +287,8 @@ async def on_chat_start():
     # Initialize ChromaDB
     chroma_instance = await cl.make_async(Chroma)()
     
-    # Clear any existing data in ChromaDB
-    await clear_chroma_db(chroma_instance)
+    # Delete the existing ChromaDB collection
+    await delete_chroma_collection(chroma_instance)
 
     # Wait for the user to upload a file
     while files is None: