Update app.py

app.py

@@ -5,6 +5,8 @@ from appStore.prep_utils import create_documents, get_client
 from appStore.embed import hybrid_embed_chunks
 from appStore.search import hybrid_search
 from torch import cuda
+import json
+
 # get the device to be used eithe gpu or cpu
 device = 'cuda' if cuda.is_available() else 'cpu'