[Q] Error 131: Customer ID topic

Everytime I try to lock the bootloader with "fastboot oem lock", I get this:

(bootloader) [PGFS] partition_update_pgfs: pg1fs_security
(bootloader) TZ_HTC_SVC_ENC ret = 0
(bootloader) [PGFS] partition_update_pgfs: pg2fs_sec_recovery
(bootloader) Lock successfully...
(bootloader) deinit_lcd
(bootloader) mipi display off
(bootloader) mdp_clock_off
(bootloader) turn off fd8c2308 failed 1 times. Try again...
(bootloader) disable_mmss_clk done
(bootloader) pll1_disable done
(bootloader) TZ_HTC_SVC_DISABLE ret = -131073 (0xFFFDFFFF)
(bootloader) [CRITICAL] SPMI write command failure: cmd_id =
0, error
(bootloader) = 4
(bootloader) [CRITICAL] SPMI write command failure: cmd_id =
0, error
(bootloader) = 4
(bootloader) [INFO] Rebooting device
FAILED (status read failed (No such file or directory))
finished. total time: 1.235s

Then, when I attempt to flash an RUU for HTC One M8 AT&T, I get error 131: customer ID. I've already reverted back to stock CID (fastboot oem writecid CWS__001).

What did I do wrong?