Incompatibility with Java 16

[Hafixion]

[12:34:02] [Thread-11/ERROR]: [KotlinBukkitAPI] Could not download Artifact{groupId='org.jetbrains.kotlin', artifactId='kotlin-stdlib', version='1.4.0', repoBaseURL='maven'}
java.util.concurrent.CompletionException: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) ~[?:?]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) ~[?:?]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1769) ~[?:?]
	at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at me.bristermitten.pdm.DependencyLoader.loadDependency(DependencyLoader.java:46) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
	... 3 more
[12:34:02] [Thread-8/ERROR]: [KotlinBukkitAPI] Could not download Artifact{groupId='org.jetbrains.kotlinx', artifactId='kotlinx-coroutines-core', version='1.3.9', repoBaseURL='maven'}
java.util.concurrent.CompletionException: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) ~[?:?]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) ~[?:?]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1769) ~[?:?]
	at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at me.bristermitten.pdm.DependencyLoader.loadDependency(DependencyLoader.java:46) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
	... 3 more
[12:34:02] [Server thread/ERROR]: Could not load 'plugins/KotlinBukkitAPI-0.2.0-SNAPSHOT-b131.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.util.concurrent.CompletionException: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:151) ~[patched_1.16.5.jar:git-Paper-683]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:397) ~[patched_1.16.5.jar:git-Paper-683]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:305) ~[patched_1.16.5.jar:git-Paper-683]
	at org.bukkit.craftbukkit.v1_16_R3.CraftServer.loadPlugins(CraftServer.java:389) ~[patched_1.16.5.jar:git-Paper-683]
	at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:252) ~[patched_1.16.5.jar:git-Paper-683]
	at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1066) ~[patched_1.16.5.jar:git-Paper-683]
	at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:290) ~[patched_1.16.5.jar:git-Paper-683]
	at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.util.concurrent.CompletionException: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314) ~[?:?]
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718) ~[?:?]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1769) ~[?:?]
	... 1 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class me.bristermitten.pdm.util.ClassLoaderReflection
	at me.bristermitten.pdm.DependencyLoader.loadDependency(DependencyLoader.java:46) ~[?:?]
	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) ~[?:?]
	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[?:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1769) ~[?:?]
	... 1 more

Could be on my end, however I've only observed this happening while on Java 16. I'm aware that a big part of the API is to keep it compatible with 1.8 and similar versions but it'd be nice if it was compatible with Java 16 as well, if possible.