Problem with LG G2 VERIZON booting

Hello members of XDA. I come to you to expose my problem. I have an LG G2 VERIZON, I tried to put a ROM Lollipop via TWRP recovery and it's wrong. I always have an error in the startup screen:

ERROR: BOOT CERTIFICTION VERIFY
**************** SECURE BOOTING ERROR
**************** CAUSE: BOOT CERTIFICTION VERIFY
the Recovery Mode does not work
Only the "Download Mode" works.

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