Custom Binary (BOOT) Blocked by R/L !!!

Hello. I tryed to root my Galaxy S6 SM-G920F with CF-Auto-Root and Odin 3.10.7 and i get an error after that .... like this Custom Binary (BOOT) Blocked by R/L !!!
How can i male that root works for my S6
Please any idea is acceted
Thanks in advance!

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