21.10 12:26:37 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
21.10 12:26:37 [Server] INFO at java.lang.reflect.Method.invoke(Unknown Source)
21.10 12:26:37 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
21.10 12:26:37 [Server] INFO at sun.reflect.GeneratedMethodAccessor143.invoke(Unknown Source)
21.10 12:26:37 [Server] INFO at net.sacredlabyrinth.Phaed.PreciousStones.listeners.PSBlockListener.onBlockPlace(PSBlockListener.java:840)
21.10 12:26:37 [Server] INFO at net.sacredlabyrinth.Phaed.PreciousStones.listeners.PSBlockListener.placingFieldChecks(PSBlockListener.java:1280)
21.10 12:26:37 [Server] INFO at net.sacredlabyrinth.Phaed.PreciousStones.managers.ForceFieldManager.fieldTouchesPlayers(ForceFieldManager.java:2643)
21.10 12:26:37 [Server] INFO at net.sacredlabyrinth.Phaed.PreciousStones.managers.ForceFieldManager.isAllowed(ForceFieldManager.java:1245)
21.10 12:26:37 [Server] INFO Caused by: java.lang.NullPointerException
21.10 12:26:37 [Server] INFO at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
21.10 12:26:37 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
21.10 12:26:37 [Server] INFO at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
21.10 12:26:37 [Server] INFO at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
21.10 12:26:37 [Server] INFO at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:561)
21.10 12:26:37 [Server] INFO at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
21.10 12:26:37 [Server] INFO at net.minecraft.server.ServerConnection.b(SourceFile:35)
21.10 12:26:37 [Server] INFO at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:111)
21.10 12:26:37 [Server] INFO at net.minecraft.server.NetworkManager.b(NetworkManager.java:282)
21.10 12:26:37 [Server] INFO at net.minecraft.server.Packet15Place.handle(SourceFile:58)
21.10 12:26:37 [Server] INFO at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:652)
21.10 12:26:37 [Server] INFO at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:371)
21.10 12:26:37 [Server] INFO at net.minecraft.server.ItemStack.placeItem(ItemStack.java:84)
21.10 12:26:37 [Server] INFO at net.minecraft.server.ItemBlock.interactWith(ItemBlock.java:76)
21.10 12:26:37 [Server] INFO at org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:99)
21.10 12:26:37 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
21.10 12:26:37 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
21.10 12:26:37 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
21.10 12:26:37 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
21.10 12:26:37 [Server] INFO org.bukkit.event.EventException
21.10 12:26:37 [Server] SEVERE Could not pass event BlockPlaceEvent to PreciousStones v9.4.1

Problem should be fixed on the dev versions