A detailed walkthrough of the error, its code path and all known details is as follows:
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-- Head --
Thread: Render thread
Suspected Mod:
	Test Mod 0.1 (test_mod), Version: 1.0.0
		at TRANSFORMER/test_mod@1.0.0/net.mcreator.testmod.init.TestModModItems.block(TestModModItems.java:36)
Stacktrace:
	at net.mcreator.testmod.init.TestModModItems.block(TestModModItems.java:36) ~[Ultranium_Mod-forge-1.20.1.jar%23157!/:?] {re:classloading}
-- MOD test_mod --
Details:
	Mod File: /C:/Users/Bunner/AppData/Roaming/.minecraft/versions/Ultranium/mods/Ultranium_Mod-forge-1.20.1.jar
	Failure message: Test Mod 0.1 (test_mod) has failed to load correctly
		java.lang.NoSuchMethodError: 'java.lang.String net.minecraft.resources.ResourceLocation.getPath()'
	Mod Version: 1.0.0
	Mod Issue URL: NOT PROVIDED
	Exception message: java.lang.NoSuchMethodError: 'java.lang.String net.minecraft.resources.ResourceLocation.getPath()'
Stacktrace:
	at net.mcreator.testmod.init.TestModModItems.block(TestModModItems.java:36) ~[Ultranium_Mod-forge-1.20.1.jar%23157!/:?] {re:classloading}
	at net.mcreator.testmod.init.TestModModItems.<clinit>(TestModModItems.java:24) ~[Ultranium_Mod-forge-1.20.1.jar%23157!/:?] {re:classloading}
	at net.mcreator.testmod.TestModMod.<init>(TestModMod.java:47) ~[Ultranium_Mod-forge-1.20.1.jar%23157!/:?] {re:classloading}
	at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] {}
	at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?] {}
	at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] {}
	at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
	at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] {}
	at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:70) ~[javafmllanguage-1.20.1-47.2.23.jar%23160!/:?] {}
	at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:124) ~[fmlcore-1.20.1-47.2.23.jar%23159!/:?] {}
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
	at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?] {}
	at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?] {}
	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?] {}
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?] {}
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?] {}