DeluxeMenus Owner Skull

Hello guys, i have one problem. Why dont appear the player head in my minegames selector? I use this configuration.
Profile:
material: head;%player_name%
slot: 20
display_name: '&2Hello, %player_name%'
lore:
- '&aYour Statics:'
- '&b'
- '&7Kills: &f%statistic_player_kills%'
- '&7Deaths: &f%statistic_deaths%'
- '&7Time Played: &f%statistic_time_played%'
- ''
- '&aClick to close'
left_click_commands:
- '[close]'
right_click_commands:
- '[close]'

SPECIFIC PROBLEM: material: head;%player_name%...

DeluxeMenus Owner Skull