Update app.py

app.py

@@ -101,8 +101,9 @@ def merge_split_docs_to_db(split_docs,db,progress,progress_step=0.1):
   for i in range(0, len(split_docs), batch):
     progress(i/len(split_docs),desc=f"added {i} chunks of {len(split_docs)} chunks")
     db1 = FAISS.from_documents(split_docs[i:i+batch], embeddings)
-    db.merge_from(db1)
-  return db
+    #db.merge_from(db1)
+    db1.merge_from(db)
+  return db1
 
 def merge_pdf_to_db(filename,db,progress,progress_step=0.1):
   progress_step+=0.05