Update app.py

app.py

@@ -17,7 +17,7 @@ for model_name in model_list:
 
 def translate(text, model_name):
     pipe = translation_pipelines[model_name]
-    return pipe(text)[0]["translation_text"] if text else ''
+    return pipe(text)[0]["translation_text"] if text.strip() else ''
 
 with gr.Blocks() as demo:
     with gr.Row():