Merge pull request #79 from ghosind/fix/issue-78

fix: check API_SERVER to avoid prerender error

Author: kubeedge-bot

modules/web/src/app/sse/keink/route.ts

@@ -3,6 +3,10 @@ import { NextRequest } from 'next/server';
 export const runtime = 'nodejs';
 
 export async function GET(req: NextRequest) {
+  if (!process.env.API_SERVER) {
+    return new Response('API_SERVER is not defined', { status: 500 });
+  }
+
   const { readable, writable } = new TransformStream();
   const writer = writable.getWriter();
   const encoder = new TextEncoder();