diff --git a/packages/start/src/client-runtime/fetcher.tsx b/packages/start/src/client-runtime/fetcher.tsx
index 1e4ef342bf..7f01e8169f 100644
--- a/packages/start/src/client-runtime/fetcher.tsx
+++ b/packages/start/src/client-runtime/fetcher.tsx
@@ -133,20 +133,10 @@ async function handleResponseErrors(response: Response) {
       return await response.text()
     })()
 
-    const message = `Request failed with status ${response.status}`
-
-    if (isJson) {
-      throw new Error(
-        JSON.stringify({
-          message,
-          body,
-        }),
-      )
-    } else {
-      throw new Error(
-        [message, `${JSON.stringify(body, null, 2)}`].join('\n\n'),
-      )
-    }
+    const defaultMessage = `Request failed with status ${response.status}`
+    const message = body?.message || body || defaultMessage
+
+    throw new Error(message)
   }
 
   return response
diff --git a/packages/start/src/server-handler/index.tsx b/packages/start/src/server-handler/index.tsx
index 0e4dc04b2f..1605043903 100644
--- a/packages/start/src/server-handler/index.tsx
+++ b/packages/start/src/server-handler/index.tsx
@@ -143,17 +143,20 @@ export async function handleServerRequest(request: Request, event?: H3Event) {
         return redirectOrNotFoundResponse(error)
       }
 
-      console.error('Server Fn Error!')
-      console.error(error)
-      console.info()
-
-      return new Response(JSON.stringify(error), {
-        status: 500,
-        headers: {
-          'Content-Type': 'application/json',
-          [serverFnReturnTypeHeader]: 'error',
+      return new Response(
+        error instanceof Error
+          ? error.toString()
+          : JSON.stringify({
+              message: error?.message ?? 'Internal Server Error',
+            }),
+        {
+          status: 500,
+          headers: {
+            'Content-Type': 'application/json',
+            [serverFnReturnTypeHeader]: 'error',
+          },
         },
-      })
+      )
     }
   })()