I have a problem with it ...

# MobArena v0.94.3.24 - Config-file
# Read the Wiki for details on how to set up this file: http://goo.gl/F5TTc
# Note: You -must- use spaces instead of tabs!
global-settings:
    enabled: true
    allowed-commands: /list, /pl
    update-notification: true
classes:
    Knight:
        items: diamond_sword, grilled_pork:2
        armor: 306,307,308,309
    Tank:
        items: iron_sword, grilled_pork:3, apple
        armor: 310,311,312,313
    Archer:
        items: wood_sword, bow, arrow:256, grilled_pork, bone
        armor: 298,299,300,301
    Chef:
        items: stone_sword, bread:6, grilled_pork:4, mushroom_soup, cake:5
        armor: 314,315,316,317
    Oddjob:
        items: stone_sword, flint_and_steel, netherrack:2, tnt:4, pork:3
        armor: 298,299,300,301
arenas:
    a1:
        settings:
            world: gry
            enabled: true
            protect: true
            entry-fee: ''
            logging: false
            clear-wave-before-next: false
            detonate-creepers: false
            detonate-damage: false
            lightning: true
            auto-equip-armor: true
            force-restore: false
            soft-restore: false
            soft-restore-drops: false
            require-empty-inv-join: true
            require-empty-inv-spec: true
            hellhounds: false
            pvp-enabled: false
            monster-infight: false
            allow-teleporting: false
            spectate-on-death: true
            share-items-in-arena: true
            player-limit: 0
            max-join-distance: 0
            repair-delay: 5
            first-wave-delay: 5
            wave-interval: 20
            special-modulo: 4
            max-idle-time: 0
            spout-class-select: true
            min-players: 0
            max-players: 0
            final-wave: 0
        rewards:
            waves:
                after:
                    '7': minecart, storage_minecart, powered_minecart
                    '16': diamond_sword
                    '13': iron_sword, iron_pickaxe, iron_spade
                every:
                    '3': feather, bone, stick
                    '10': iron_ingot:10, gold_ingot:8
                    '5': dirt:4, gravel:4, stone:4
        coords:
            p1: -108,46,129,0.0,0.0
            leaderboard: -110,62,149,0.0,0.0
            p2: -82,61,155,0.0,0.0
            arena: -96,54,142,0.0,0.0
            lobby: -106,48,131,0.0,0.0
            spectator: -97,65,143,-271.82547,47.026203
            spawnpoints:
                s1: -105,54,132,0.0,0.0
                s2: -105,54,152,0.0,0.0
                s3: -85,54,132,0.0,0.0
                s4: -85,54,152,0.0,0.0