diff --git a/spring-web/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java b/spring-web/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java
index b4c27f78b6..a53deaf2ff 100644
--- a/spring-web/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java
+++ b/spring-web/src/main/java/org/springframework/http/server/reactive/ReactorHttpHandlerAdapter.java
@@ -73,7 +73,7 @@ public class ReactorHttpHandlerAdapter implements BiFunction<HttpServerRequest,
 		}
 
 		return this.httpHandler.handle(adaptedRequest, adaptedResponse)
-				.doOnError(ex -> logger.error("Handling completed with error", ex))
+				.doOnError(ex -> logger.warn("Handling completed with error: " + ex.getMessage()))
 				.doOnSuccess(aVoid -> logger.debug("Handling completed with success"));
 	}
 
diff --git a/spring-web/src/main/java/org/springframework/http/server/reactive/ServletHttpHandlerAdapter.java b/spring-web/src/main/java/org/springframework/http/server/reactive/ServletHttpHandlerAdapter.java
index 0374dd38c5..8c81f62a11 100644
--- a/spring-web/src/main/java/org/springframework/http/server/reactive/ServletHttpHandlerAdapter.java
+++ b/spring-web/src/main/java/org/springframework/http/server/reactive/ServletHttpHandlerAdapter.java
@@ -279,7 +279,7 @@ public class ServletHttpHandlerAdapter implements Servlet {
 
 		@Override
 		public void onError(Throwable ex) {
-			logger.error("Handling completed with error", ex);
+			logger.warn("Handling completed with error: " + ex.getMessage());
 			runIfAsyncNotComplete(this.asyncContext, this.isCompleted, () -> {
 				if (this.asyncContext.getResponse().isCommitted()) {
 					logger.debug("Dispatching into container to raise error");
diff --git a/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowHttpHandlerAdapter.java b/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowHttpHandlerAdapter.java
index dc5e1a3d18..e9ad7d90ed 100644
--- a/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowHttpHandlerAdapter.java
+++ b/spring-web/src/main/java/org/springframework/http/server/reactive/UndertowHttpHandlerAdapter.java
@@ -97,7 +97,7 @@ public class UndertowHttpHandlerAdapter implements io.undertow.server.HttpHandle
 
 		@Override
 		public void onError(Throwable ex) {
-			logger.error("Handling completed with error", ex);
+			logger.warn("Handling completed with error: " + ex.getMessage());
 			if (this.exchange.isResponseStarted()) {
 				try {
 					logger.debug("Closing connection");