Cannot read property of undefined in grabber.. grabber.js 42 about explorer HOT 1 CLOSED

[0] Mongoose: blocks.insert({ difficulty: '5', extraData: '0x322e312e31362f6c696e75782d616d6436342f676f312e31302e320000000000', gasLimit: 210284448, gasUsed: 7707000, hash: '0x0256e4662d7f832eb68d55ac2493505ffd13431cb98a692b21811cef34664125', logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000', miner: '0xdd7e460302a911f9162a208370cdcdc37b892453', nonce: '0x0000000000000000', number: 49470, parentHash: '0x5ec35a4f3134f130f49ec2921c0644cd940ca28334ae958a08aa0f51ee6b64db', sha3Uncles: '0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347', size: 40249, stateRoot: '0xac2445d16ad931da02bbfca8c09875af2c74b2b715b51cb7fd78373d92af4610', timestamp: 1527365325, totalDifficulty: '188182', transactionsRoot: '0x3d503279331936e1a78e07b04f4806d52407465800e93a4b727904df61a61c37', transactionsCount: 367, _id: ObjectId("5b09c4036039381653bba755"), uncles: [], __v: 0 })
[0] DB successfully written block number 49470  block hash :0x0256e4662d7f832eb68d55ac2493505ffd13431cb98a692b21811cef34664125
[0] Got new hash: 0x0b79bfc5384ee7d3030c0a494b808fa0106a59245c87c1d82b0f6e5b49501bba
[0] /var/www/gochain/node_modules/web3/lib/web3/requestmanager.js:239
[0]             throw errors.InvalidResponse(results);
[0]             ^
[0] 
[0] Error: You hit the request limit
[0]     at Object.InvalidResponse (/var/www/gochain/node_modules/web3/lib/web3/errors.js:38:16)
[0]     at /var/www/gochain/node_modules/web3/lib/web3/requestmanager.js:239:26
[0]     at XMLHttpRequest.request.onreadystatechange (/var/www/gochain/node_modules/web3/lib/web3/httpprovider.js:118:13)
[0]     at XMLHttpRequestEventTarget.dispatchEvent (/var/www/gochain/node_modules/xhr2/lib/xhr2.js:64:18)
[0]     at XMLHttpRequest._setReadyState (/var/www/gochain/node_modules/xhr2/lib/xhr2.js:354:12)
[0]     at XMLHttpRequest._onHttpResponseEnd (/var/www/gochain/node_modules/xhr2/lib/xhr2.js:509:12)
[0]     at IncomingMessage.<anonymous> (/var/www/gochain/node_modules/xhr2/lib/xhr2.js:469:24)
[0]     at emitNone (events.js:111:20)
[0]     at IncomingMessage.emit (events.js:208:7)
[0]     at endReadableNT (_stream_readable.js:1064:12)
[0]     at _combinedTickCallback (internal/process/next_tick.js:138:11)
[0]     at process._tickCallback (internal/process/next_tick.js:180:9)
[0] node tools/grabber.js  exited with code 1
[1] GET /xmlrpc.php 200 70.296 ms - 11309
[1] GET / 200 11.616 ms - 11309