Update app.py

app.py

@@ -7,9 +7,13 @@ os.makedirs(UPLOAD_DIR, exist_ok=True)
 def save_file(file):
     if file is None:
         return "Please upload a file."
+
+    # file.name is the uploaded filename
+    # file is a NamedString -> use file to read content directly
     file_path = os.path.join(UPLOAD_DIR, file.name)
     with open(file_path, "wb") as f:
-        f.write(file.read())
+        f.write(file)  # just write the bytes
+
     return f"✅ File `{file.name}` uploaded successfully!"
 
 with gr.Blocks() as demo: