environ.get

app.py

@@ -152,7 +152,7 @@ def gradio_interface_function(template, text, is_example):
         # yield gr.update(value=chunk_info), gr.update(value=progress), gr.update(value=full_pred), gr.update(value=html_content)
         yield progress, full_pred, html_content
 
-    if not is_example and os.environ["LOG_SERVER"] is not None:
+    if not is_example and os.environ.get("LOG_SERVER") is not None:
         log_event(text, template, full_pred)