fix: change to load env from local.

app.py

@@ -4,14 +4,12 @@ import json
 import os
 from meta_prompt import get_prompt
 from openai import OpenAI
-from dotenv import load_dotenv
 from utils import render_pdf_to_base64png, image_to_pdf, get_anchor_text
 import gradio as gr
 from PIL import Image
 
-load_dotenv()
 
-openai = OpenAI(base_url=os.getenv("TYPHOON_BASE_URL"), api_key=os.getenv("TYPHOON_API_KEY"))
+openai = OpenAI(base_url=os.environ.get("TYPHOON_BASE_URL"), api_key=os.environ.get("TYPHOON_API_KEY"))
 
 theme = gr.themes.Soft(
     primary_hue=gr.themes.Color(
@@ -66,7 +64,7 @@ def process_pdf(pdf_or_image_file, task_type):
     }]
     # send messages to openai compatible api
     response = openai.chat.completions.create(
-        model=os.getenv("TYPHOON_OCR_MODEL"),
+        model=os.environ.get("TYPHOON_OCR_MODEL"),
         messages=messages,
         max_tokens=16384,
         extra_body={