исправление возможной ошибки запроса

index.js

@@ -87,6 +87,11 @@ io.on('connection', function(socket)
 			return;
 
 		socketMysql.query('SELECT * FROM `torrents` ORDER BY added DESC LIMIT 0,10', function (error, rows, fields) {
+		  if(!rows) {
+		  	callback(undefined)
+		  	return;
+		  }
+
 		  let torrents = [];
 		  rows.forEach((row) => {
 		  	torrents.push(baseRowData(row));
@@ -102,6 +107,11 @@ io.on('connection', function(socket)
 			return;
 
 		socketMysql.query('SELECT * FROM `statistic`', function (error, rows, fields) {
+		  if(!rows) {
+		  	callback(undefined)
+		  	return;
+		  }
+
 		  callback(rows[0])
 		});
 	});
@@ -115,8 +125,8 @@ io.on('connection', function(socket)
 			return;
 
 		socketMysql.query('SELECT * FROM `torrents` WHERE `hash` = ?', hash, function (error, rows, fields) {
-		  if(rows.length == 0) {
-		  	callback(undefined);
+		  if(!rows || rows.length == 0) {
+		  	callback(undefined)
 		  	return;
 		  }
 		  let torrent = rows[0];
@@ -149,6 +159,10 @@ io.on('connection', function(socket)
 		const limit = navigation.limit || 10;
 		let search = {};
 		socketMysql.query('SELECT * FROM `torrents` WHERE MATCH(`name`) AGAINST(?) LIMIT ?,?', [text, index, limit], function (error, rows, fields) {
+			if(!rows) {
+			  	callback(undefined)
+			  	return;
+			}
 			rows.forEach((row) => {
 		  		search[row.hash] = baseRowData(row);
 		  	});
@@ -172,6 +186,10 @@ io.on('connection', function(socket)
 		const limit = navigation.limit || 10;
 		let search = {};
 		socketMysql.query('SELECT * FROM `files` INNER JOIN torrents ON(torrents.hash = files.hash) WHERE MATCH(`path`) AGAINST(?) LIMIT ?,?', [text, index, limit], function (error, rows, fields) {
+			if(!rows) {
+			  	callback(undefined)
+			  	return;
+			}
 			rows.forEach((row) => {
 		  		search[row.hash] = baseRowData(row);
 		  		search[row.hash].path = row.path;

src/recent-torrents.js

@@ -149,8 +149,10 @@ export default class RecentTorrents extends Component {
   }
   componentDidMount() {
   	window.torrentSocket.emit('recentTorrents', (data) => {
+  		if(data) {
   			this.torrents = data;
   			this.forceUpdate();
+  		}
   	});
   	this.newTorrentFunc = (torrent) => {
   		this.torrents.unshift(torrent);

src/search.js

@@ -47,8 +47,10 @@ export default class Search extends Component {
   }
   componentDidMount() {
     this.newStatisticFunc = (statistic) => {
+      if(statistic) {
         this.stats = statistic;
         this.forceUpdate();
+      }
     };
     window.torrentSocket.emit('statistic', this.newStatisticFunc);
     window.torrentSocket.on('newStatistic', this.newStatisticFunc);

src/torrent-page.js

@@ -138,8 +138,10 @@ export default class TorrentPage extends Component {
   };
   componentDidMount() {
   	window.torrentSocket.emit('torrent', this.props.hash, {files: true}, (data) => {
+  		if(data) {
   			this.torrent = data
   			this.forceUpdate();
+  		}
   	});
   }
   render() {