Mastery - InvalidGasUsed(Mismatch { expected: 43280, found: 42000 })

[0x4a5e1e4baab]

os & version: ubuntu 18.04
release: aionr-0.2.6-20190722

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Cant sync the Mastery network, the logs indicate a bad block || InvalidGasUsed error as shows below.

Release was directly from github,
executed ./mastery.sh
default configuration options

2019-09-10 15:22:37 -------------------------------------------------------------------------------------------------------------------------------
2019-09-10 15:22:37 Abnormal status, reseting network...
2019-09-10 15:22:37 Node: 13.90.81.122:30303@a30d4000-729a-4584-86f1-e19ab97cf9cq, Connection refused (os error 111)
2019-09-10 15:22:47 Node: 13.90.81.122:30303@a30d4000-729a-4584-86f1-e19ab97cf9cq, Connection refused (os error 111)
2019-09-10 15:22:52 ======================================================== Sync Statics =========================================================
2019-09-10 15:22:52 Best block number: 3129118, hash: cb2d…fa70
2019-09-10 15:22:52 Network Best block number: 3235765, hash: 841b…6320
2019-09-10 15:22:52 Max staged block number: 0
2019-09-10 15:22:52 Sync speed: 0 blks/sec
2019-09-10 15:22:52 Total/Connected/Active peers: 3/3/0
2019-09-10 15:22:52 -------------------------------------------------------------------------------------------------------------------------------
2019-09-10 15:22:52       Total Diff    Blk No.    Blk Hash                 Address                 Revision      Conn  Seed  LstReq No.       Mode
2019-09-10 15:22:52 -------------------------------------------------------------------------------------------------------------------------------
2019-09-10 15:22:52 -------------------------------------------------------------------------------------------------------------------------------
2019-09-10 15:22:52 Abnormal status, reseting network...
2019-09-10 15:22:57 Node: 13.90.81.122:30303@a30d4000-729a-4584-86f1-e19ab97cf9cq, Connection refused (os error 111)
2019-09-10 15:22:59 Stage 5 block verification failed for #3129119 (a5fa…fdb1)
Error: Block(InvalidGasUsed(Mismatch { expected: 43280, found: 42000 }))
2019-09-10 15:23:01 Got bad block #3129139, a8dbea9fb7cc192bf4dea174dbf66844b2ddfcd21350296b54c832ee0942da36
2019-09-10 15:23:03 Node: a30d2000-729a-4584-86f1-e19ab97cf9ce, the fork point #3129077 found, switched from BACKWARD mode to FORWARD mode