my friend have incopatible client

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    [12:29:40] [Server thread/INFO]: com.mojang.authlib.GameProfile@ea17ca1[id=<null>,name=LeNoob,properties={},legacy=false] (/90.101.202.29:62369) lost connection: [oωo] §chandshake failure incompatible client

    we got this on the consol

    and he just get incombatible client, its on a modspack and he use tlaucher

    please help