Z-NOMP Cannot read property 'root' of undefined [Solved]

Did anybody face this ERROR and solved this? Please help me! Many thanks!

ERROR message:

/home/howie/z-nomp/node_modules/stratum-pool/lib/merkleTree.js:8
return result._65.root;
^

TypeError: Cannot read property 'root' of undefined
at calcRoot (/home/howie/z-nomp/node_modules/stratum-pool/lib/merkleTree.js:8:22)
at Object.exports.getRoot (/home/howie/z-nomp/node_modules/stratum-pool/lib/merkleTree.js:20:18)
at new BlockTemplate (/home/howie/z-nomp/node_modules/stratum-pool/lib/blockTemplate.js:54:30)
at JobManager.processTemplate (/home/howie/z-nomp/node_modules/stratum-pool/lib/jobManager.js:123:32)
at /home/howie/z-nomp/node_modules/stratum-pool/lib/pool.js:588:66
at itemFinished (/home/howie/z-nomp/node_modules/stratum-pool/lib/daemon.js:156:36)
at /home/howie/z-nomp/node_modules/stratum-pool/lib/daemon.js:170:17
at parseJson (/home/howie/z-nomp/node_modules/stratum-pool/lib/daemon.js:85:17)
at IncomingMessage. (/home/howie/z-nomp/node_modules/stratum-pool/lib/daemon.js:96:17)
at emitNone (events.js:110:20)

Tkanks a lot

I modify
return result._65.root;
to
return result._1.root;
then I can run up