Code (Skript):

1.  
2. command /levelup:
3.     trigger:
4.         open virtual chest inventory with size 6 named "&6&lLevel &a&lUp" to player
5.         format gui slot 0 of player with coal block named "&8[&a1✩&8]" with lore "&6Price: &a1 XP" and "&6Click to levelup!" to close then run:
6.             if {level::%player's uuid%} is greater than to 0:
7.                 send "&c&l[!] &cYou have already leveled up higher than this level. Please choose a higher level to levelup." to player
8.             if {level::%player's uuid%} is less than 1:
9.                 send "&c&l[!] &cYou have insufficient funds to level up here. Please choose a lower level to levelup first." to player
10.             else:
11.                 if player's level is higher than to 0:
12.                     make console execute command "announcement &6%player% &ajust &bleveled up &ato their &bvery first level! &5&lGG"
13.                     remove 1 from player's level
14.                     set {level::%player's uuid%} to 1
15.                 else:
16.                     send "&8&l(&b&l!&8&l) &bYou have insufficient funds to levelup." to player

Can someone fix it?
It says coal block is not a vaild type of rescpie

 

Yes, The 1.8.1 one