add statistics fetch debug message

src/app/website/index/liveStats.ts

@@ -14,6 +14,8 @@ if (STATISTICS_ENDPOINT) {
 }
 
 async function fetchStatistics() {
+  logger.debug('fetching statistics');
+
   const response = (await fetch(STATISTICS_ENDPOINT!, {
     method: 'POST',
     body: JSON.stringify({