Failed to parse block when miner connects

[bradstines]

Error: Failed to parse block
at Object.BlockTemplate.nextBlob (/root/pool/lib/pool.js:128:23)
at Object.Miner.getJob (/root/pool/lib/pool.js:302:41)
at handleMinerMethod (/root/pool/lib/pool.js:531:28)
at handleMessage (/root/pool/lib/pool.js:660:13)
at Socket.socket.on.on.on.pushMessage (/root/pool/lib/pool.js:714:25)
at Socket.emit (events.js:95:17)
at Socket. (stream_readable.js:765:14)
at Socket.emit (events.js:92:17)
at emitReadable (_stream_readable.js:427:10)
at emitReadable (_stream_readable.js:423:5)