diff --git a/core/src/main/java/com/alibaba/nacos/core/paramcheck/ParamCheckerFilter.java b/core/src/main/java/com/alibaba/nacos/core/paramcheck/ParamCheckerFilter.java
index 6995f83c083..6b1d1418bb1 100644
--- a/core/src/main/java/com/alibaba/nacos/core/paramcheck/ParamCheckerFilter.java
+++ b/core/src/main/java/com/alibaba/nacos/core/paramcheck/ParamCheckerFilter.java
@@ -63,6 +63,10 @@ public void doFilter(ServletRequest request, ServletResponse response, FilterCha
         HttpServletResponse resp = (HttpServletResponse) response;
         try {
             Method method = methodsCache.getMethod(req);
+            if (method == null) {
+                chain.doFilter(req, resp);
+                return;
+            }
             ExtractorManager.Extractor extractor = method.getAnnotation(ExtractorManager.Extractor.class);
             if (extractor == null) {
                 extractor = method.getDeclaringClass().getAnnotation(ExtractorManager.Extractor.class);