From 28bca92e9cdc118ebbb142d92bc5795d761c24ce Mon Sep 17 00:00:00 2001
From: Vaadin Bot <vaadin-bot@users.noreply.github.com>
Date: Tue, 14 Jan 2025 11:32:16 +0100
Subject: [PATCH] fix: Store the exception and not an array with the exception
 for uncaught promise exceptions (#20840) (#20841)

Co-authored-by: Artur <artur@vaadin.com>
---
 .../flow/server/communication/IndexHtmlRequestHandler.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flow-server/src/main/java/com/vaadin/flow/server/communication/IndexHtmlRequestHandler.java b/flow-server/src/main/java/com/vaadin/flow/server/communication/IndexHtmlRequestHandler.java
index 36e3bfe1127..94f5adfacfc 100644
--- a/flow-server/src/main/java/com/vaadin/flow/server/communication/IndexHtmlRequestHandler.java
+++ b/flow-server/src/main/java/com/vaadin/flow/server/communication/IndexHtmlRequestHandler.java
@@ -287,7 +287,7 @@ private void catchErrorsInDevMode(Document indexDocument) {
                 + //
                 "};" + //
                 "window.addEventListener('unhandledrejection', e => {" + //
-                "    window.Vaadin.ConsoleErrors.push([e.reason]);" + //
+                "    window.Vaadin.ConsoleErrors.push(e.reason);" + //
                 "});" //
         );
     }