Whats the problem in the skript?

on break:
 if "%region at event-block%" contains "wood" or "ground" or "grass" or "electric" or "posison" or "flying" or "dragon":

 set {_loc} to location at event-block
 set {_item} to type of event-block
 set {_amount} to 1

 set {_n} to 1
 loop 25 times:
     if lore of player's tool contains "&8Fortune: &5%{_n}":
         chance of 30%:
             add {_n} to {_amount}
     add 1 to {_n}

 if lore of player's tool contains "&8Blast: &51":
     chance of 10%:
         create a fake explosion at {_loc}
         loop blocks in radius 1 around the event-block:
             if "%region at loop-block" contains "wood" or "ground" or "grass" or "electric" or "posison" or "flying" or "dragon":
                 break loop-block
                 add 1 to {_amount}
 if lore of player's tool contains "&8Blast: &52":
     chance of 10%:
     create a fake explosion at {_loc}
         loop blocks in radius 2 around the event-block:
             if "%region at loop-block" contains "wood" or "ground" or "grass" or "electric" or "posison" or "flying" or "dragon":
                 break loop-block
                 add 1 to {_amount}

 if lore of player's tool does not contain "&8Telepathy":
     drop {_amount} of {_item} at {_loc}
    
 else:
     if player's inventory has space for {_amount} of {_item}:
         give player {_amount} of {_item}
     else:
         send title "" with subtitle "&c&1INVENTORY FULL!" to player
         play sound "BLOCK_NOTE_BLOCK_BASS" at volume 100 and pitch 1 for player