Fix: no proxy requirement for hf deployment

app.py

@@ -116,15 +116,12 @@ def setup(api_key, n_blocks, n_bowls, proxy_addr, cfg_choice):
     if not api_key:
         return 'Please enter your OpenAI API key!', None, None
 
-    if not proxy_addr:
-        return 'Please enter your local proxy address!', None, None
-
     if n_blocks + n_bowls == 0:
         return 'Please select at least one object!', None, None
 
-    if "http://" in proxy_addr:
+    if proxy_addr is not None and "http://" in proxy_addr:
         openai.proxy = proxy_addr
-    else:
+    elif proxy_addr is not None:
         openai.proxy = f"http://{proxy_addr}"
 
     # ip_status, ip_info = get_geoip(openai.proxy)