run pool_frontend_zcash

[Surfang]

Hi!
Plz help my run pool_frontend_zcash
dz@pool:/ZEC/poolcore/x86_64-Linux/poolrpccmd$ ./poolrpccmd p2p://127.0.0.1:12201 getInfo
coin: ZEC
dz@pool:/ZEC/poolcore/x86_64-Linux/poolrpccmd$ ./poolrpccmd p2p://127.0.0.1:12201 getBlockTemplate
getBlockTemplate call duration 758.100ms

• nbits: 486576856
• prevhash: 0000000049cffcd940d3935d3928cd852bb6a05f40e1947bac16c12ff4394f9b
• hashreserved: 0000000000000000000000000000000000000000000000000000000000000000
• merkle: 34996bf5abb357b7a095c214ee0188e9ae22149acb5863be17055479375ec554
• time: 1499683699
• extraNonce: 1
• equilHashK = 9
• equilHashN = 200
  dz@pool:/ZEC/poolcore/x86_64-Linux/poolrpccmd$
  Launch pool
  dz@dazpool:/ZEC/pool_frontend_zcash/x86_64-Linux$ ./pool_frontend_zcash ~/.zcash/zcash.cfg
  share target for stratum is 0020000000000000000000000000000000000000000000000000000000000000
  loaded 0 shares from shares.raw file
  loaded 0 payouts from payouts.raw.old file
  loaded 0 payouts from payouts.raw file
  loaded 0 rounds from db
  loaded 0 user balance data from db
  found partition /home/dz/pool.zcash/workerStats/2017.07 for /home/dz/pool.zcash/workerStats
  found partition /home/dz/pool.zcash/poolstats/2017.07 for /home/dz/pool.zcash/poolstats
  : Pool backend started, mode is MASTER
  : Pool fee of 1% to t1MRwwY4u6u71QLNNSW48iS5mebAbFWFsbv
  totalQueued: 0
  totalRequested: 0
  getCurrentBlock call failed

after which

Thank you for running a Zcash node!
You're helping to strengthen the network and contributing to a social good :)

You are currently not mining.
Block height | 90666
Network solution rate | 49953570 Sol/s
Connections | 8

You are currently not mining.
To enable mining, add 'gen=1' to your zcash.conf and restart.

Since starting this node 6 minutes, 13 seconds ago:

• You have validated 36958 transactions!

[Press Ctrl+C to exit] [Set 'showmetrics=0' to hide]
Segmentation fault (core dumped)

cat ~/.zcash/debug.log
2017-07-10 10:49:44 UpdateTip: new best=000000006d67a8cd3b74c4c947f025f19d795376b136c581fe615c99e8b7a0be height=90666 log2_work=49.14185 tx=445246 date=2017-04-03 23:14:14 progress=0.463379 cache=56.8MiB(2363tx)
2017-07-10 10:49:44 ERROR: ReadBlockFromDisk: OpenBlockFile failed for CBlockDiskPos(nFile=-1, nPos=0)