lg h910 frp reset error

LG 2-3G Tool v9.48
supported models: 1555

Mode: Emergency
Model: H910PR
Read info...
Laf Protocol: 01000004
Model name: LG-H910
Software verion: H91010t
Android verion: 7.0
Target operator: ATT
Target country: US
Chipset: msm8996
IMEI: 351746081010251
Elapsed: 4 secs. --> (v9.48)

Phone mode is DOWNLOAD
Start reset FRP...
Laf Protocol: 01000004
Model name: LG-H910
Software verion: H91010t
Android verion: 7.0
Target operator: ATT
Target country: US
Chipset: msm8996
IMEI: 351746081010251
Laf cmd info: send LAF_CMD_COPY, retry #1
Laf cmd info: send LAF_CMD_COPY, retry #2
Laf cmd info: send LAF_CMD_COPY, retry #3
Laf cmd error: LAF_CMD_COPY could not write.
Error reset locks
Elapsed: 15 secs. --> (v9.48)

help pls..