Vivo z1 pro pattern remove failed.
 

Operation : Special Functions (Heuristic)
Device : Z1 Pro (1918) PD1911F_EX
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 (COM194)
Driver Info : Qualcomm Incorporated, qcusbser.sys, 2.1.2.7
Connecting to phone...OK
Waiting for response...OK
Init Handshake Sequence...OK
Hardware ID : E1801000 [SDM710] 03007300
OPK_DATA : 7C81953E833D16B94703B743C9B7F41CBF1608F0990A4C2B3A 112C52810CB8F1
Initializing Protocol...OK
Preparing Loader...Done
Sending Loader [Z1_Pro]...Done
Executing Loader...OK
Initiazling Storage...OK
Formatting Userdata...Failed
Unlocking Bootloader...Failed
Operation Failed.

anyone please help me.

select ufs from storage and try again or select z1 and use vivo fs/frp and post result