Error SlimeXpansion not loading

[PhantumOne]

SlimeXpansion has started returning an error and disabling itself.

One of my players reported to me two days ago that some of their machines were not working and so I looked at the plugin list and SlimeXpansion was red text. I had them log out and I rebooted the server and that is when I saw the error.

I have gone back and loaded earlier versions to see when it started, but all version return the same issue. I then unloaded all plugins except for Slimefun4, all addon's available for slimefun4, EssentialsX, LuckPerms, Vault, WorldEdit and WorldGuard and I still get the same error. I then loaded the 1.15 R01 initial release and a couple of later builds and got the same error so I then tried 1.15.1 and 1.15.2 builds (a few of each of them) and still get the same error. The server was loading without errors and the plugin list was all green just a few weeks ago. but I noticed that I did not disable updates so I am not sure if an update caused this.

Here is the error running all current plugins with latest PaperMC 1.15.2 build 90. The Caused by: line looks like it cant find a specific Class file.

[17:13:53] [Server thread/INFO]: [SlimeXpansion] Enabling SlimeXpansion vDEV - 4 (git 198cd0a)
[17:13:53] [Server thread/ERROR]: Error occurred while enabling SlimeXpansion vDEV - 4 (git 198cd0a) (Is it up to date?)
java.lang.NoClassDefFoundError: io/github/thebusybiscuit/slimefun4/utils/LoreBuilder
at me.john000708.slimexpansion.Items.(Items.java:41) ~[?:?]
at me.john000708.slimexpansion.SlimeXpansion.registerItems(SlimeXpansion.java:114) ~[?:?]
at me.john000708.slimexpansion.SlimeXpansion.onEnable(SlimeXpansion.java:89) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.15.2.jar:git-Paper-90]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337) ~[patched_1.15.2.jar:git-Paper-90]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:435) ~[patched_1.15.2.jar:git-Paper-90]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugin(CraftServer.java:470) ~[patched_1.15.2.jar:git-Paper-90]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.enablePlugins(CraftServer.java:384) ~[patched_1.15.2.jar:git-Paper-90]
at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:482) ~[patched_1.15.2.jar:git-Paper-90]
at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:298) ~[patched_1.15.2.jar:git-Paper-90]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:885) ~[patched_1.15.2.jar:git-Paper-90]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]
Caused by: java.lang.ClassNotFoundException: io.github.thebusybiscuit.slimefun4.utils.LoreBuilder
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_231]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:171) ~[patched_1.15.2.jar:git-Paper-90]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:100) ~[patched_1.15.2.jar:git-Paper-90]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_231]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_231]
... 12 more
[17:13:53] [Server thread/INFO]: [SlimeXpansion] Disabling SlimeXpansion vDEV - 4 (git 198cd0a)