fix error message that print undefined

lib/core/logger.js

@@ -1,7 +1,6 @@
 require('colors');
 let fs = require('./fs.js');
 const date = require('date-and-time');
-const constants = require('../constants');
 
 const DATE_FORMAT = 'YYYY-MM-DD HH:mm:ss:SSS';
 const LOG_REGEX = new RegExp(/\[(\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d:\d\d\d)\] (?:\[(\w*)\]:?)?\s?\s?(.*)/gmi);
@@ -91,7 +90,7 @@ Logger.prototype.error = function () {
     return;
   }
   this.events.emit("log", "error", ...arguments);
-  this.logFunction(...Array.from(arguments).map(t => {return t ? t.red : t;}));
+  this.logFunction(...Array.from(arguments).map(t => { return t ? t.red : t; }));
   this.writeToFile("[error]: ", ...arguments);
 };
 
@@ -100,7 +99,7 @@ Logger.prototype.warn = function () {
     return;
   }
   this.events.emit("log", "warn", ...arguments);
-  this.logFunction(...Array.from(arguments).map(t => {return t ? t.yellow : t;}));
+  this.logFunction(...Array.from(arguments).map(t => { return t ? t.yellow : t; }));
   this.writeToFile("[warning]: ", ...arguments);
 };
 
@@ -109,7 +108,7 @@ Logger.prototype.info = function () {
     return;
   }
   this.events.emit("log", "info", ...arguments);
-  this.logFunction(...Array.from(arguments).map(t => {return t ? t.green : t;}));
+  this.logFunction(...Array.from(arguments).map(t => { return t ? t.green : t; }));
   this.writeToFile("[info]: ", ...arguments);
 };
 

lib/modules/blockchain_connector/index.js

@@ -538,8 +538,8 @@ class BlockchainConnector {
       function(next) {
         async.times(limit, function(n, eachCb) {
           self.web3.eth.getBlock(from - n, returnTransactionObjects, function(err, block) {
-            if (err) {
-              self.logger.error(err);
+            if (err && err.message) {
+              // FIXME Returns an error because we are too low
               return eachCb();
             }
             blocks.push(block);