[03:29:55 ERROR]: Could not pass event EntityInteractEvent to MagicPotions v1.1
java.lang.NullPointerException: Cannot invoke "org.bukkit.inventory.ItemStack.getType()" because the return value of "de.mullabfuhr.magicpotions.listeners.DropListener.getDropItem()" is null
at de.mullabfuhr.magicpotions.listeners.PortListener.onPressurePlate(PortListener.java:28) ~[MagicPotions-1.1.jar:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor97.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:75) ~[paper-api-1.18.1-R0.1-SNAPSHOT.jar:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[paper-api-1.18.1-R0.1-SNAPSHOT.jar:git-Paper-216]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-api-1.18.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:629) ~[paper-api-1.18.1-R0.1-SNAPSHOT.jar:?]
at net.minecraft.world.level.block.BigDripleafBlock.entityInside(BigDripleafBlock.java:183) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.entityInside(BlockBehaviour.java:1001) ~[?:?]
at net.minecraft.world.entity.Entity.checkInsideBlocks(Entity.java:1419) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.world.entity.Entity.tryCheckInsideBlocks(Entity.java:1155) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.world.entity.Entity.move(Entity.java:1082) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.world.entity.LivingEntity.handleRelativeFrictionAndCalculateMovement(LivingEntity.java:2811) ~[?:?]
at net.minecraft.world.entity.LivingEntity.travel(LivingEntity.java:2766) ~[?:?]
at net.minecraft.world.entity.LivingEntity.aiStep(LivingEntity.java:3304) ~[?:?]
at net.minecraft.world.entity.Mob.aiStep(Mob.java:628) ~[?:?]
at net.minecraft.world.entity.LivingEntity.tick(LivingEntity.java:2914) ~[?:?]
at net.minecraft.world.entity.Mob.tick(Mob.java:396) ~[?:?]
at net.minecraft.world.entity.ambient.Bat.tick(Bat.java:117) ~[?:?]
at net.minecraft.server.level.ServerLevel.tickNonPassenger(ServerLevel.java:1133) ~[?:?]
at net.minecraft.world.level.Level.guardEntityTick(Level.java:979) ~[?:?]
at net.minecraft.server.level.ServerLevel.lambda$tick$5(ServerLevel.java:670) ~[?:?]
at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:43) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:650) ~[?:?]
at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1617) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:480) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1480) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1273) ~[paper-1.18.1.jar:git-Paper-216]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:317) ~[paper-1.18.1.jar:git-Paper-216]
at java.lang.Thread.run(Thread.java:833) ~[?:?]

Cool! The best vanilla /tpa plugin! :D