Commands crash my client (mcp 1.20.1)

[MineStef2]

I tried running a command in a singleplayer world, it crashed immediately after i pressed enter to run it.

java.lang.Error: Unresolved compilation problem: Type CommandNode<S< cannot be safely cast to ArgumentCommandNode<S,?>

at net.minecraft.network.chat.SignableCommand.collectArguments(SignableCommand.java:38)
at net.minecraft.network.chat.SignableCommand.of(SignableCommand.java:21)
at net.minecraft.client.multiplayer.ClientPacketListener.sendCommand(ClientPacketListener.java:2413)
at net.minecraft.client.gui.screens.ChatScreen.handleChatInput(ChatScreen.java:223)
at net.minecraft.client.gui.screens.ChatScreen.keyPressed(ChatScreen.java:101)
at net.minecraft.client.KeyboardHandler.lambda$6(KeyboardHandler.java:376)
at net.minecraft.client.gui.screens.Screen.wrapScreenError(Screen.java:429)
at net.minecraft.client.KeyboardHandler.keyPress(KeyboardHandler.java:369)
at net.minecraft.client.KeyboardHandler.lambda$11(KeyboardHandler.java:454)
at net.minecraft.util.thread.BlockableEventLoop.execute(BlockableEventLoop.java:90)
at net.minecraft.client.KeyboardHandler.lambda$9(KeyboardHandler.java:453)
at org.lwjgl.glfw.GLFWKeyCallbackI.callback(GLFWKeyCallbackI.java:44)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3403)
at com.mojang.blaze3d.systems.RenderSystem.pollEvents(RenderSystem.java:175)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(RenderSystem.java:188)
at com.mojang.blaze3d.platform.Window.updateDisplay(Window.java:271)
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1140)
at net.minecraft.client.Minecraft.run(Minecraft.java:707)
at net.minecraft.client.main.Main.main(Main.java:218)
at mcp.client.Start.main(Start.java:17)`

Anything that can fix this?