fix: trackjs issue

Author: balakrishna-deriv

src/javascript/app/pages/trade/charts/digit_info.js

@@ -246,6 +246,10 @@ const DigitInfo = (() => {
     };
 
     const updateChart = async (tick) => {
+        if (typeof chart === 'undefined') {
+            return;
+        }
+        
         const decimal_places = await Symbols.getUnderlyingPipSize(tick.tick.symbol);
         if (stream_id) {
             if (chart.series[0].name === tick.tick.symbol) {

src/javascript/config.js

@@ -106,7 +106,8 @@ const getSocketURL = () => {
 
         const loginid       = window.localStorage.getItem('active_loginid');
         const is_real       = loginid && !/^VRT/.test(loginid);
-        const server        = isProduction() && is_real ? 'green' : 'red';
+        const real_server   = is_real ? 'green' : 'blue';
+        const server        = isProduction() ? real_server : 'red';
 
         server_url = `${server}.derivws.com`;
     }