stupid spaces

app.py

@@ -23,11 +23,10 @@ def pdf_changes(pdf_doc):
     db = Chroma.from_documents(texts, embeddings)
     retriever = db.as_retriever()
     global qa 
-   qa = ConversationalRetrievalChain.from_llm(
-    llm=OpenAI(model="gpt-3.5-turbo-0613", temperature=0.5),  
-    retriever=retriever, 
-    return_source_documents=False)
-
+    qa = ConversationalRetrievalChain.from_llm(
+        llm=OpenAI(model="gpt-3.5-turbo-0613", temperature=0.5),  
+        retriever=retriever, 
+        return_source_documents=False)
     return "Ready"
 
 def add_text(history, text):