default groq api key set in repo secrets

app.py

@@ -1,11 +1,11 @@
 import gradio as gr
 from rag import RAG, ServiceContextModule
 from llama_index.core import set_global_service_context
-from dotenv import load_dotenv
 import json
 from prompts import general_prompt
 from gradio_pdf import PDF
 import requests
+import os
 
 service_context_module = None
 current_model = None
@@ -14,7 +14,6 @@ current_model = None
 def initialize(api_key, model_name):
     global service_context_module, current_model
     gr.Info("Initializing app")
-    load_dotenv(override=True)
     url = "https://api.groq.com/openai/v1/models"
     headers = {
         "Authorization": f"Bearer {api_key}",
@@ -85,8 +84,14 @@ Created by [@rajsinghparihar](https://huggingface.co/rajsinghparihar) for extrac
     )
     with gr.Tab(label="Init Section") as init_tab:
         with gr.Row():
-            api_key = gr.Text(label="Enter your Groq API KEY", type="password")
+            api_key = gr.Text(
+                label="Enter your Groq API KEY",
+                type="password",
+            )
+            if api_key == "" or not api_key:
+                api_key = os.getenv("GROQ_API_KEY")
             available_models = gr.Dropdown(
+                value="llama3-70b-8192",
                 label="Choose your LLM",
                 choices=[
                     "gemma-7b-it",