McJty updated and has breaking compatibility changes for XNetGases.

Problem may only exist on the server.

java.lang.NoClassDefFoundError: mcjty/lib/varia/WorldTools
at terrails.xnetgases.module.gas.GasChannelSettings.tick(GasChannelSettings.java:97) ~[xnetgases:2.3.7] {re:classloading}
at mcjty.xnet.modules.controller.blocks.TileEntityController.func_73660_a(TileEntityController.java:301) ~[xnet:1.16-3.0.14] {re:classloading}
at net.minecraft.world.World.func_217391_K(MixinWorldRedstone.java:491) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:observerlib:coremodmethod,xf:fml:astralsorcery:sun_brightness_server,xf:fml:twilightforest:hitbox,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,xf:fml:observerlib:coremodmethod,xf:fml:astralsorcery:sun_brightness_server,xf:fml:twilightforest:hitbox,pl:mixin:APP:mixins.integrated_proxy.json:MixinWorldRedstone,pl:mixin:APP:roadrunner.mixins.json:ai.nearby_entity_tracking.WorldMixin,pl:mixin:APP:roadrunner.mixins.json:alloc.chunk_random.WorldMixin,pl:mixin:APP:roadrunner.mixins.json:world.block_entity_ticking.collections.WorldMixin,pl:mixin:APP:roadrunner.mixins.json:world.block_entity_ticking.should_tick_cache.WorldMixin,pl:mixin:APP:roadrunner.mixins.json:world.block_entity_ticking.support_cache.WorldMixin,pl:mixin:APP:roadrunner.mixins.json:world.chunk_access.WorldMixin,pl:mixin:APP:kubejs-common.mixins.json:LevelMixin,pl:mixin:A,pl:runtimedistcleaner:A}
...
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_311] {}
at terrails.xnetgases.module.gas.GasChannelSettings.tick(GasChannelSettings.java:97) ~[xnetgases:2.3.7] {re:classloading}
at mcjty.xnet.modules.controller.blocks.TileEntityController.func_73660_a(TileEntityController.java:301) ~[xnet:1.16-3.0.14] {re:classloading}