Plugin disabling after second restart - Start log(Plugin Failure)

[18:30:37] [Server thread/INFO]: [MythicMobs] Enabling MythicMobs v5.0.0-SNAPSHOT-5145f853
[18:30:37] [Server thread/WARN]: [MythicMobs] Loaded class javassist.d from BlockLocker v1.10 which is not a depend, softdepend or loadbefore of this plugin.
[18:30:37] [Server thread/ERROR]: Error occurred while enabling MythicMobs v5.0.0-SNAPSHOT-5145f853 (Is it up to date?)
java.lang.VerifyError: Bad return type
Exception Details:
  Location:
    javassist/f.b(Ljava/lang/String;Z)Ljavassist/CtClass; @67: areturn
  Reason:
    Type 'javassist/l' (current frame, stack[0]) is not assignable to 'javassist/CtClass' (from method signature)
  Current Frame:
    bci: @67
    flags: { }
    locals: { 'javassist/f', 'java/lang/String' }
    stack: { 'javassist/l' }
  Bytecode:
    0000000: 2b03 b600 9510 5ba0 0008 2bb8 00a1 4c2b
    0000010: 12a3 b600 a799 002f 2b03 2b10 5bb6 00ab
    0000020: b600 af4e 1c99 000b 2a2d b600 87c7 000d
    0000030: 2a2d b600 b2c7 0005 01b0 bb00 b459 2b2a
    0000040: b700 b7b0 2a2b b600 b2c7 0005 01b0 bb00
    0000050: 8059 2b2a b700 b8b0
  Stackmap Table:
    same_frame(@15)
    full_frame(@48,{Object[#2],Object[#126],Top,Object[#126]},{})
    chop_frame(@58,2)
    same_frame(@68)
    same_frame(@78)

	at io.lumine.xikage.mythicmobs.utils.plugin.LuminePluginL10.a(Unknown Source) ~[?:?]
	at io.lumine.xikage.mythicmobs.utils.plugin.LuminePlugin.onEnable(LuminePlugin.java) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.16.5.jar:git-Paper-788]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:370) ~[patched_1.16.5.jar:git-Paper-788]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:500) ~[patched_1.16.5.jar:git-Paper-788]
	at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:518) ~[patched_1.16.5.jar:git-Paper-788]
	at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:432) ~[patched_1.16.5.jar:git-Paper-788]
	at net.minecraft.server.v1_16_R3.MinecraftServer.loadWorld(MinecraftServer.java:594) ~[patched_1.16.5.jar:git-Paper-788]
	at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:298) ~[patched_1.16.5.jar:git-Paper-788]
	at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1069) ~[patched_1.16.5.jar:git-Paper-788]
	at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291) ~[patched_1.16.5.jar:git-Paper-788]
	at java.lang.Thread.run(Thread.java:829) [?:?]
[18:30:37] [Server thread/INFO]: [MythicMobs] Disabling MythicMobs v5.0.0-SNAPSHOT-5145f853
[18:30:37] [Server thread/INFO]: [MythicMobs] Disabling Mythic Mobs...
[18:30:37] [Server thread/WARN]: java.lang.NullPointerException
[18:30:37] [Server thread/WARN]: 	at io.lumine.xikage.mythicmobs.MythicMobs.disable(MythicMobs.java:204)
[18:30:37] [Server thread/WARN]: 	at io.lumine.xikage.mythicmobs.utils.plugin.LuminePlugin.onDisable(LuminePlugin.java:73)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:405)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:533)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:374)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:500)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:518)
[18:30:37] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:432)
[18:30:37] [Server thread/WARN]: 	at net.minecraft.server.v1_16_R3.MinecraftServer.loadWorld(MinecraftServer.java:594)
[18:30:37] [Server thread/WARN]: 	at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:298)
[18:30:37] [Server thread/WARN]: 	at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1069)
[18:30:37] [Server thread/WARN]: 	at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291)
[18:30:37] [Server thread/WARN]: 	at java.base/java.lang.Thread.run(Thread.java:829)