java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.Entity.m_20185_()" because "knocker" is null
at net.mcreator.theknocker.procedures.SpawnknockerProcedure.execute(SpawnknockerProcedure.java:70) ~[the_knocker-1.4.0a-forge-1.19.2.jar%23308!/:?] {re:classloading}
at net.mcreator.theknocker.procedures.RandomeventProcedure.execute(RandomeventProcedure.java:23) ~[the_knocker-1.4.0a-forge-1.19.2.jar%23308!/:?] {re:classloading}
at net.mcreator.theknocker.procedures.RandomspawnProcedure.execute(RandomspawnProcedure.java:91) ~[the_knocker-1.4.0a-forge-1.19.2.jar%23308!/:?] {re:classloading}
at net.mcreator.theknocker.procedures.RandomspawnProcedure.onPlayerTick(RandomspawnProcedure.java:32) ~[the_knocker-1.4.0a-forge-1.19.2.jar%23308!/:?] {re:classloading}
at net.mcreator.theknocker.procedures.RandomspawnProcedure_onPlayerTick_PlayerTickEvent.invoke(.dynamic) ~[the_knocker-1.4.0a-forge-1.19.2.jar%23308!/:?] {re:classloading,pl:eventbus:B}
at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.3.jar%2385!/:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.3.jar%2385!/:?] {}
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.3.jar%2385!/:?] {}
at net.minecraftforge.event.ForgeEventFactory.onPlayerPostTick(ForgeEventFactory.java:819) ~[forge-1.19.2-43.4.4-universal.jar%23318!/:?] {re:mixin,re:classloading,pl:mixin:APP:modernfix-forge.mixins.json:perf.potential_spawns_alloc.ForgeEventFactoryMixin,pl:mixin:A}
at net.minecraft.world.entity.player.Player.m_8119(Player.java:288) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.fall_sounds.PlayerMixin,pl:mixin:APP:saturn.mixins.json:allocations.item_cooldowns.PlayerMixin,pl:mixin:APP:entity_model_features-common.mixins.json:MixinPlayerEntity,pl:mixin:APP:entity_texture_features-common.mixins.json:entity.misc.MixinPlayerEntity,pl:mixin:APP:sleep_tight-common.mixins.json:PlayerMixin,pl:mixin:APP:mixin.nostalgic_tweaks-common.json:world.entity.PlayerMixin,pl:mixin:APP:mixin.nostalgic_tweaks-common-client.json:world.entity.PlayerMixin,pl:mixin:A}
at net.minecraft.server.level.ServerPlayer.m_9240(ServerPlayer.java:447) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterchunkloading.mixins.json:PlayerChunkDataMixin,pl:mixin:APP:sleep_tight-common.mixins.json:ServerPlayerMixin,pl:mixin:APP:chunksending.mixins.json:ServerPlayerChunkSending,pl:mixin:A}
at net.minecraft.server.network.ServerGamePacketListenerImpl.m_9933_(ServerGamePacketListenerImpl.java:264) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,re:classloading,pl:mixin:APP:betterchunkloading.mixins.json:PlayerMovementNoUnloaded,pl:mixin:APP:modernfix-forge.mixins.json:bugfix.forge_vehicle_packets.ServerGamePacketListenerImplMixin,pl:mixin:A}
at net.minecraft.network.Connection.m_129483_(Connection.java:248) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:classloading,re:mixin}
at net.minecraft.server.network.ServerConnectionListener.m_9721_(ServerConnectionListener.java:143) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:classloading}
at net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:880) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:fastload.mixins.json:server.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:core.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:perf.dedicated_reload_executor.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:dimthread.mixin.json:MinecraftServerMixin,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:806) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:fastload.mixins.json:server.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:core.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:perf.dedicated_reload_executor.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:dimthread.mixin.json:MinecraftServerMixin,pl:mixin:A}
at net.minecraft.client.server.IntegratedServer.m_5705_(IntegratedServer.java:84) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:runtimedistcleaner:A,re:computing_frames,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:smoothboot.mixins.json:client.IntegratedServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:654) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:fastload.mixins.json:server.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:core.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:perf.dedicated_reload_executor.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:dimthread.mixin.json:MinecraftServerMixin,pl:mixin:A}
at net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:244) ~[client-1.19.2-20220805.130853-srg.jar%23313!/:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:saturn.mixins.json:allocations.server_directory.MinecraftServerMixin,pl:mixin:APP:fastload.mixins.json:server.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:core.MinecraftServerMixin,pl:mixin:APP:modernfix-common.mixins.json:perf.dedicated_reload_executor.MinecraftServerMixin,pl:mixin:APP:balm.mixins.json:MinecraftServerMixin,pl:mixin:APP:dimthread.mixin.json:MinecraftServerMixin,pl:mixin:A}
at java.lang.Thread.run(Unknown Source) [?:?] {re:mixin}

same crash. knocker is null related crash.