remove colon

index.js

@@ -13,7 +13,7 @@ app.set('trust proxy', true)
 app.use(express.static('static'));
 
 app.post('/', async function (req, res) {
-    let id =  'web:' + createHash('sha256').update(req.ip).digest('base64');
+    let id =  'web' + createHash('sha256').update(req.ip).digest('base64');
     id = id.slice(0,16);
 
     if (!sessions[id]) {