cant import costum npc table
what to do
NPCTable: Error creating custom NPC table.
java.lang.IllegalArgumentException: String value required, but not specified
at com.l2jserver.gameserver.templates.StatsSet.getString(StatsSet.java:375)
at com.l2jserver.gameserver.templates.chars.L2NpcTemplate.<init>(L2NpcTemplate.java:188)
at com.l2jserver.gameserver.datatables.NpcTable.fillNpcTable(NpcTable.java:666)
at com.l2jserver.gameserver.datatables.NpcTable.restoreNpcData(NpcTable.java:106)
at com.l2jserver.gameserver.datatables.NpcTable.<init>(NpcTable.java:64)
at com.l2jserver.gameserver.datatables.NpcTable.<init>(NpcTable.java:49)
at com.l2jserver.gameserver.datatables.NpcTable$SingletonHolder.<clinit>(NpcTable.java:919)
at com.l2jserver.gameserver.datatables.NpcTable.getInstance(NpcTable.java:57)
at com.l2jserver.gameserver.GameServer.<init>(GameServer.java:265)
at com.l2jserver.gameserver.GameServer.main(GameServer.java:491)
