Update app.py

app.py

@@ -67,7 +67,7 @@ with gr.Blocks(css=css) as demo:
         
         with gr.Column():
             pdf_doc = gr.File(label="Load a pdf", file_types=['.pdf'], type="file")
-            repo_id = gr.Dropdown(label="LLM", choices=["google/flan-ul2", "OpenAssistant/oasst-sft-1-pythia-12b", "bigscience/bloomz"], value="google/flan-ul2")
+            repo_id = gr.Dropdown(label="LLM", choices=["meta-llama/Llama-2-7b", "OpenAssistant/oasst-sft-1-pythia-12b", "bigscience/bloomz"], value="meta-llama/Llama-2-7b")
             with gr.Row():
                 langchain_status = gr.Textbox(label="Status", placeholder="", interactive=False)
                 load_pdf = gr.Button("Load pdf to langchain")