Update app.py

app.py

@@ -35,6 +35,8 @@ HF_TOKEN = os.getenv("HF_TOKEN")
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY", "").strip()
 if OPENAI_API_KEY:
     openai.api_key = OPENAI_API_KEY
+from openai import OpenAI
+client = OpenAI(api_key=OPENAI_API_KEY)
 
 # MONGO_URI = f"mongodb+srv://{user}:{password}@{cluster}/{db_name}?retryWrites=true&w=majority"
 MONGO_URI = f"mongodb+srv://{user}:{password}@{cluster}/{db_name}?retryWrites=true&w=majority&tls=true&tlsAllowInvalidCertificates=true"
@@ -263,7 +265,7 @@ PROMPTS:
             st.error("❌ OPENAI_API_KEY is not set.")
             return "⚠️ OpenAI key missing."
         try:
-            response = openai.ChatCompletion.create(
+            response = client.ChatCompletion.create(
                 model="gpt-3.5-turbo",
                 messages=[
                     {"role": "system", "content": "You extract prompts and headers from grant text."},
@@ -356,7 +358,7 @@ def generate_response(input_dict, use_openai=False):
         prompt = grantbuddy_prompt.format(**input_dict)
 
         try:
-            response = openai.ChatCompletion.create(
+            response = client.ChatCompletion.create(
                 model="gpt-3.5-turbo", 
                 messages=[
                     {"role": "system", "content": prompt},