this is needed for plesk....

server.js

@@ -0,0 +1,28 @@
+// server.js
+const { createServer } = require('http')
+const { parse } = require('url')
+const next = require('next')
+
+const dev = process.env.NODE_ENV !== 'production'
+const app = next({ dev })
+const handle = app.getRequestHandler()
+
+app.prepare().then(() => {
+    createServer((req, res) => {
+        // Be sure to pass `true` as the second argument to `url.parse`.
+        // This tells it to parse the query portion of the URL.
+        const parsedUrl = parse(req.url, true)
+        const { pathname, query } = parsedUrl
+
+        if (pathname === '/a') {
+            app.render(req, res, '/a', query)
+        } else if (pathname === '/b') {
+            app.render(req, res, '/b', query)
+        } else {
+            handle(req, res, parsedUrl)
+        }
+    }).listen(3000, (err) => {
+        if (err) throw err
+        console.log('> Ready on http://localhost:3000')
+    })
+})