請問這兩個是什麼意思? 哪裡設定錯誤??

天涯何處無芳草

	java.lang.NullPointerException -------------------------------------------- java.lang.NullPointerException         at com.lineage.data.npc.Tsai.PatternMaster.action(PatternMaster.java:565)         at com.lineage.server.clientpackets.C_NPCAction.start(C_NPCAction.java:287)         at com.lineage.echo.PacketHandler.handlePacket(PacketHandler.java:67)         at com.lineage.echo.PacketHc.run(PacketHc.java:50)         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)         at java.lang.Thread.run(Thread.java:745) -------------------------------------------------------------------------------------------------------------- 請問大神們 這兩ˋ個是什麼原因呀?