Update app.py

app.py

@@ -226,7 +226,13 @@ def export_chat(history):
 def import_chat(file):
     """Import chat history from a JSONL file."""
     try:
-        content = file  # Read the file directly as a string
+        # Handle both file-like objects and NamedString objects
+        if hasattr(file, 'name'):  # It's a NamedString from gr.UploadButton
+            with open(file.name, 'r', encoding='utf-8') as f:
+                content = f.read()
+        else:  # It's a file-like object
+            content = file.read()
+            
         lines = [line.strip() for line in content.split("\n") if line.strip()]
         
         messages = [json.loads(line) for line in lines]