I could not get solo mining working sadly

TypeError: Object.values is not a function
    at calcRoot (/home/da/snowgem-solo-mining/lib/stratum/merkleTree.js:8:19)
    at Object.exports.getRoot (/home/d/snowgem-solo-mining/lib/stratum/merkleTree.js:19:18)
    at new BlockTemplate (/home/d/snowgem-solo-mining/lib/stratum/blockTemplate.js:53:30)
    at JobManager.processTemplate (/home/d/snowgem-solo-mining/lib/stratum/jobManager.js:123:32)
    at /home/d/snowgem-solo-mining/lib/stratum/pool.js:581:66
    at itemFinished (/home/d/snowgem-solo-mining/lib/stratum/daemon.js:155:36)
    at /home/d/snowgem-solo-mining/lib/stratum/daemon.js:169:17
    at parseJson (/home/d/snowgem-solo-mining/lib/stratum/daemon.js:85:17)
    at IncomingMessage. (/home/d/snowgem-solo-mining/lib/stratum/daemon.js:95:17)
    at emitNone (events.js:91:20)
[Pool][Thread 3][2018/01/19 21:57:50] Fork 3 died, spawning replacement worker...

Can anyone help?