Update chatbot.py

chatbot.py

@@ -12,8 +12,8 @@ DATABASE_URL = os.getenv('DATABASE_URL')
 
 # Parse the database URL
 result = urlparse(DATABASE_URL)
-username = result.username
-password = result.password
+db_username = result.username
+db_password = result.password
 database = result.path[1:]
 hostname = result.hostname
 port = result.port
@@ -23,8 +23,8 @@ def connect_db():
     try:
         conn = psycopg2.connect(
             dbname=database,
-            user=username,
-            password=password,
+            user=db_username,
+            password=db_password,
             host=hostname,
             port=port
         )