Update v2.py

v2.py

@@ -13,7 +13,7 @@ class v2:
         proxies: dict = {},
     ):  
         self.session = requests.Session()
-        self.chat_endpoint = os.get("v2")
+        self.chat_endpoint = os.getenv("v2")
         self.stream_chunk_size = 64
         self.timeout = timeout
         self.last_response = {}