diff --git a/packages/backend/src/server/web/boot.js b/packages/backend/src/server/web/boot.js
index 0c0b46f82b..ab4b158287 100644
--- a/packages/backend/src/server/web/boot.js
+++ b/packages/backend/src/server/web/boot.js
@@ -13,7 +13,7 @@
 	};
 	window.onunhandledrejection = (e) => {
 		console.error(e);
-		renderError('SOMETHING_HAPPENED_IN_PROMISE', e);
+		renderError('SOMETHING_HAPPENED_IN_PROMISE', e.reason || e);
 	};
 
 	let forceError = localStorage.getItem('forceError');