move to sveltekit 2, fix 404 page returning 500

src/routes/streams/[stream_id]/+page.server.ts

@@ -43,7 +43,7 @@ if (dev) {
 export function load({ params }) {
 	const result = getStreamInfo(params.stream_id);
 	if (result === null) {
-		throw error(404);
+		error(404);
 	}
 
 	if (dev) {

src/routes/streams/[stream_id]/original/+server.ts

@@ -13,7 +13,7 @@ if (process.env.NODE_ENV === 'development') {
 			const jsonString = fs.readFileSync(filePath, 'utf8');
 			return json(jsonString);
 		} else {
-			throw error(404);
+			error(404);
 		}
 	}
 }