Information

Full output of /ess version:
Server version: 1.15.2-R0.1-SNAPSHOT git-Paper-144 (MC: 1.15.2)
[16:36:00 INFO]: EssentialsX version: 2.17.2.0
[16:36:00 INFO]: LuckPerms version: 5.0.72
[16:36:00 INFO]: EssentialsXChat version: 2.17.2.0
[16:36:00 INFO]: EssentialsXGeoIP version: 2.17.2.0
[16:36:00 INFO]: EssentialsXAntiBuild version: 2.17.2.0
[16:36:00 INFO]: EssentialsXSpawn version: 2.17.2.0
[16:36:00 INFO]: EssentialsXXMPP version: 2.17.2.0
[16:36:00 INFO]: EssentialsXProtect version: 2.17.2.0

Server log:
https://mclo.gs/C2tGDwV
EssentialsX config

Help request

Problem

config.yml.broken.1585167146454
EssentialsX does not save my configuration for the config.yml file.
And when the first person joined the server the log says;
[16:18:35 WARN]: [Essentials] Task #286 for Essentials v2.17.2.0 generated an exception
java.lang.NullPointerException: null
at com.earth2me.essentials.xmpp.XMPPManager.updatePresence(XMPPManager.java:150) ~[?:?]
at com.earth2me.essentials.xmpp.EssentialsXMPP.updatePresence(EssentialsXMPP.java:113) ~[?:?]
at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftTask.run(CraftTask.java:84) ~[minecraft_server.jar:git-Paper-144]
at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:452) ~[minecraft_server.jar:git-Paper-144]
at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1185) ~[minecraft_server.jar:git-Paper-144]
at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:430) ~[minecraft_server.jar:git-Paper-144]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112) ~[minecraft_server.jar:git-Paper-144]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934) ~[minecraft_server.jar:git-Paper-144]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
[16:18:35 INFO]: [Essentials] Creating empty config: /aternos/server/plugins/Essentials/userdata/0e96f8b2-bceb-4e01-8b43-e148a4db7200.yml
What I have tried

I have tried reloading the plugin restartuing server etc.
Screenshots

config.yml.broken means you have failed to properly configure Essentials. This is usually due to incorrect formatting in the file (such as tabs instead of spaces, incorrect spacing, invalid characters, etc). If you're stuck, start over and change only one thing at a time, to make sure you figure out what you're doing wrong.

The exception from XMPPManager means that you have EssentialsXXMPP installed, but you have not configured it correctly. Do so, or remove the plugin if you aren't using it.