[22:03:49] [Server thread/WARN]: Couldn't create template entity of bosses_of_mass_destruction:obsidilith (class net.minecraft.class_1297)... Defaulting to empty
java.lang.NullPointerException: Cannot invoke "dev.onyxstudios.cca.generated.GeneratedComponentContainer.get$bosses_of_mass_destruction$event_scheduler()" because "" is null
at dev.onyxstudios.cca.generated.ComponentType$bosses_of_mass_destruction$event_scheduler.getInternal(Unknown Source) ~[?:?]
at dev.onyxstudios.cca.api.v3.component.ComponentKey.get(ComponentKey.java:83) ~[cardinal-components-base-4.1.4-5cbea34fcb0886.jar:?]
at net.barribob.boss.cardinalComponents.ModComponents$Companion.getWorldEventScheduler(ModComponents.kt:35) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.mobs.obsidilith.BurstAction.(BurstAction.kt:22) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.mobs.obsidilith.ObsidilithEntity.(ObsidilithEntity.kt:52) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities$OBSIDILITH$1.invoke(Entities.kt:81) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities$OBSIDILITH$1.invoke(Entities.kt:80) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities.registerConfiguredMob$lambda-0(Entities.kt:115) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.minecraft.class_1299.method_5883(class_1299.java:478) ~[server-intermediary.jar:?]
at eu.pb4.polymer.impl.entity.InternalEntityHelpers.getEntity(InternalEntityHelpers.java:50) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at eu.pb4.polymer.impl.networking.PolymerServerProtocol.sendSyncPackets(PolymerServerProtocol.java:255) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at net.minecraft.class_3324.localvar$cmn000$polymer_setupHandler(class_3324.java:9451) ~[server-intermediary.jar:?]
at net.minecraft.class_3324.method_14570(class_3324.java:170) ~[server-intermediary.jar:?]
at net.minecraft.class_3248.method_33800(class_3248.java:130) ~[server-intermediary.jar:?]
at net.minecraft.class_3248.md543d77$lambda$polymer_prePlayHandshakeHackfest$0$0(class_3248.java:2032) ~[server-intermediary.jar:?]
at eu.pb4.polymer.impl.networking.PolymerHandshakeHandlerImplLogin.method_12082(PolymerHandshakeHandlerImplLogin.java:141) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at net.minecraft.class_2827.method_12266(class_2827.java:15) ~[server-intermediary.jar:?]
at net.minecraft.class_2827.method_11054(class_2827.java:6) ~[server-intermediary.jar:?]
at net.minecraft.class_2600.method_11072(class_2600.java:22) ~[server-intermediary.jar:?]
at net.minecraft.class_3738.run(class_3738.java:18) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_18859(class_1255.java:157) ~[server-intermediary.jar:?]
at net.minecraft.class_4093.method_18859(class_4093.java:23) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_24306(MinecraftServer.java:808) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_18859(MinecraftServer.java:165) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_16075(class_1255.java:131) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:790) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16075(MinecraftServer.java:784) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_5383(class_1255.java:116) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:768) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.handler$zld000$modifiedRunLoop(MinecraftServer.java:4905) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:676) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:273) ~[server-intermediary.jar:?]
at java.lang.Thread.run(Thread.java:833) [?:?]
[22:03:49] [Server thread/WARN]: Couldn't create template entity of bosses_of_mass_destruction:gauntlet (class net.minecraft.class_1297)... Defaulting to empty
java.lang.NullPointerException: Cannot invoke "dev.onyxstudios.cca.generated.GeneratedComponentContainer.get$bosses_of_mass_destruction$event_scheduler()" because "" is null
at dev.onyxstudios.cca.generated.ComponentType$bosses_of_mass_destruction$event_scheduler.getInternal(Unknown Source) ~[?:?]
at dev.onyxstudios.cca.api.v3.component.ComponentKey.get(ComponentKey.java:83) ~[cardinal-components-base-4.1.4-5cbea34fcb0886.jar:?]
at net.barribob.boss.cardinalComponents.ModComponents$Companion.getWorldEventScheduler(ModComponents.kt:35) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.mobs.gauntlet.GauntletEntity.(GauntletEntity.kt:65) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities$GAUNTLET$1.invoke(Entities.kt:85) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities$GAUNTLET$1.invoke(Entities.kt:84) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.barribob.boss.mob.Entities.registerConfiguredMob$lambda-0(Entities.kt:115) ~[BOMD-1.3.7-1.18.2.jar:?]
at net.minecraft.class_1299.method_5883(class_1299.java:478) ~[server-intermediary.jar:?]
at eu.pb4.polymer.impl.entity.InternalEntityHelpers.getEntity(InternalEntityHelpers.java:50) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at eu.pb4.polymer.impl.networking.PolymerServerProtocol.sendSyncPackets(PolymerServerProtocol.java:255) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at net.minecraft.class_3324.localvar$cmn000$polymer_setupHandler(class_3324.java:9451) ~[server-intermediary.jar:?]
at net.minecraft.class_3324.method_14570(class_3324.java:170) ~[server-intermediary.jar:?]
at net.minecraft.class_3248.method_33800(class_3248.java:130) ~[server-intermediary.jar:?]
at net.minecraft.class_3248.md543d77$lambda$polymer_prePlayHandshakeHackfest$0$0(class_3248.java:2032) ~[server-intermediary.jar:?]
at eu.pb4.polymer.impl.networking.PolymerHandshakeHandlerImplLogin.method_12082(PolymerHandshakeHandlerImplLogin.java:141) ~[polymer-0.2.0-beta.36+1.18.2-e16a7ece54e7132.jar:?]
at net.minecraft.class_2827.method_12266(class_2827.java:15) ~[server-intermediary.jar:?]
at net.minecraft.class_2827.method_11054(class_2827.java:6) ~[server-intermediary.jar:?]
at net.minecraft.class_2600.method_11072(class_2600.java:22) ~[server-intermediary.jar:?]
at net.minecraft.class_3738.run(class_3738.java:18) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_18859(class_1255.java:157) ~[server-intermediary.jar:?]
at net.minecraft.class_4093.method_18859(class_4093.java:23) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_24306(MinecraftServer.java:808) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_18859(MinecraftServer.java:165) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_16075(class_1255.java:131) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:790) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16075(MinecraftServer.java:784) ~[server-intermediary.jar:?]
at net.minecraft.class_1255.method_5383(class_1255.java:116) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:768) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.handler$zld000$modifiedRunLoop(MinecraftServer.java:4905) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:676) ~[server-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:273) ~[server-intermediary.jar:?]
at java.lang.Thread.run(Thread.java:833) [?:?]

the boss cant be located with the command /locate before actually seeing a structure
but we managed to find a boss
so there is an error but it still work
im not sure if its a good issue or a real bug i jst wanted to prevent you

This error is unrelated to the issue - that is due to some other mod.
The reason why the boss can't be located is that the mods add lots of biomes and need to manually be added to make the structure generate. So currently there aren't very many biomes to spawn in so it makes them rare. I will see if I can add their biomes

Ok I cannot replicate with incendium - I am able to find both the new biomes and the gauntlet structures with /locate. I am guessing you found an uncommon case where there are not very many vanilla biomes. Also nullscape is 1.18.1, so I am not able to look at that until it is 1.18.2 or 1.19