Oppo A71k CPH1801 after flash dead

i try to flash oppo A71 2018 but flashing failed and phone dead now any one have solution.
Firmware package: CPH1801EX_11_A.15_181212
Scanning for Qualcomm HS-USB QDLoader 9008 device...
Download Port: Qualcomm HS-USB QDLoader 9008 (COM9)
Connection status: EHCI:HUB:HUB:USB 2.0 High-Speed
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.0, date: 7-8-2015
Initializing...
MSM Serial number: 0x66856a76
MSM HW ID: 0x0009a0e1 (SDM450)
OEM Public Key Hash...

Oppo A71k CPH1801 after flash dead

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