Bug fix

app.py

@@ -110,7 +110,7 @@ examples = [
 input_question = gr.Dropdown(choices=examples, label='Question:',
     info='A multiple-choice commonsense question. Please follow the UnifiedQA input format: "{question} \\n (A) ... (B) ... (C) ..."',
 )
-input_model = gr.DropDown(label='Model:', value=MODELS[0], choices=MODELS)
+input_model = gr.Dropdown(label='Model:', value=MODELS[0], choices=MODELS)
 input_max_question_len = gr.Number(label='Max number of tokens in question:', value=256, precision=0)
 input_max_knowledge_len = gr.Number(label='Max number of tokens in knowledge:', value=32, precision=0)
 input_max_answer_len = gr.Number(label='Max number of tokens in answer:', value=2, precision=0)