Update app.py

app.py

@@ -152,7 +152,10 @@ def initialize_database(list_file_obj, chunk_size, chunk_overlap, progress=gr.Pr
     collection_name = Path(list_file_path[0]).stem
     # Fix potential issues from naming convention
     ## Remove space
-    collection_name = collection_name.replace(" ","-") 
+    collection_name = collection_name.replace(" ","-")
+    # Remove periods
+    collection_name = collection_name.replace(".","_") 
+
     ## Limit lenght to 50 characters
     collection_name = collection_name[:50]
     ## Enforce start and end as alphanumeric character