From 76433f9f046c3f211d09e0047e4e3a05f9311eaf Mon Sep 17 00:00:00 2001
From: Harshit Jain <48647625+Harshit28j@users.noreply.github.com>
Date: Wed, 21 Jan 2026 08:54:28 +0530
Subject: [PATCH] fix: add better error handling for misconfig on health check
 (#19441)

---
 litellm/proxy/proxy_server.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 8d306327dec..ff48443efc8 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -2738,6 +2738,14 @@ class ProxyConfig:
             for k, v in router_settings.items():
                 if k in available_args:
                     router_params[k] = v
+                elif k == "health_check_interval":
+                    raise ValueError(
+                        f"'{k}' is NOT a valid router_settings parameter. Please move it to 'general_settings'."
+                    )
+                else:
+                    verbose_proxy_logger.warning(
+                        f"Key '{k}' is not a valid argument for Router.__init__(). Ignoring this key."
+                    )
         router = litellm.Router(
             **router_params,
             assistants_config=assistants_config,