Update app.py

app.py

@@ -251,6 +251,7 @@ def build_qa_chain(collection_name, vector_db, file: str):
     #collection_name = create_collection_name(list_file_path[0])
     #collection_name = file.name 
     collection_name = "pdf_docs_"+file.name[-10:]
+    collection_name = collection_name.replace("/","_" )
     
     vector_db = Chroma.from_documents(
             documents=chunked_documents,