desire 530 bootloader unlock problem

Printing phone history

Unlock bootloader
23-Aug-18
11:33:45
AM

Bootloader unlock started
Checking Bootloader state...
Phone detected
Successfully started in fastboot mode.
Gathering Bootloader information
Fastboot exited unexpectedly.
Finished at local time: [08.23.18 20:22:11]
WorkID: 42886654