oppo a3s Format FS error

Operation : Flash
Checking for existing devices...Not Found
Turn Off phone, hold Vol UP + Vol DOWN and insert USB cable.
Some phones may need Special Boot Cable or TestPoint for EDL mode.
Found Port : Qualcomm HS-USB QDLoader 9008 (COM8)
Driver Info : Qualcomm Incorporated, qcusbser.sys, 2.1.2.2
Connecting to phone...OK
Waiting for response...OK
Init Handshake Sequence...OK
Hardware ID : E1A00900 [8953] 00000000
OPK_DATA : 74CBAEF3BA268ADE2E3358EFC3D2CA99C340596C0C7F14E283 D91F76E0EA3DFE
Initializing Protocol...OK
Sending Loader [prog_emmc_firehose_8953_ddr.mbn]...Done
Executing Loader...Failed! Possibly Wrong Loader
Please select Loader manually, or use Factory Loader in Custom Option.
Please use correct loader and check USB port / cable.
Operation Finished.
Module Ver. 2.6