reveel 2 5052w error

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--------- 2019-06-28 19:19:29 ---------
SigmaKey 2.33.01 MTK: Direct unlock (Alcatel 5052W)
Connecting...Error opening serial port
--------- 2019-06-28 19:19:54 ---------
SigmaKey 2.33.01 MTK: Direct unlock (Alcatel 5052W)
Removing firmware protection...OK
Baseband Processor:MT6739, HW Rev. B.00, SW Rev. 0.02
Testing external RAM...DRAM, 2 Gb
Detecting flash...eMMC, Flash size: 29.14 Gb
Phone model: Alcatel 5052W
Android 8.1.0
Firmware: A30ATMO-user 8.1.0 OPM1.171019.011 vAR3S-0 release-keys
Hardware IMEI: 015246001......
Unlocking phone...
Unhandled exception C0000005 [012D54CF]