From 2cace14712715e9f213a1aa6a3f861ae4b248f09 Mon Sep 17 00:00:00 2001
From: Newbie <linhdqtg@gmail.com>
Date: Fri, 19 Jan 2018 21:46:39 +0700
Subject: [PATCH] Fix NaN , credit to 1rV1N-git

https://github.com/Snipa22/nodejs-pool/issues/86
---
 lib/worker.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/worker.js b/lib/worker.js
index 788f4e0..cb0b499 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -513,7 +513,7 @@ function monitorNodes() {
             }
             rows.forEach(function (row) {
                     if (row.blockID < block.height - 3) {
-                        global.support.sendEmail(global.config.general.adminEmail, "Pool server behind in blocks", "The pool server: "+row.hostname+" with IP: "+row.ip+" is "+block.height - row.blockID+ " blocks behind");
+                        global.support.sendEmail(global.config.general.adminEmail, "Pool server behind in blocks", "The pool server: "+row.hostname+" with IP: "+row.ip+" is "+(block.height - row.blockID)+ " blocks behind");
                     }
                 }
             );