HelloWorld failed after building on "remove mixin"

[boholder]

Here is my code:

import gym
import minerl

env = gym.make("MineRLBasaltFindCave-v0")
obs = env.reset()

done = False
while not done:
    ac = env.action_space.noop()
    # Spin around to see what is around us
    ac["camera"] = [0, 3]
    obs, reward, done, info = env.step(ac)
    env.render()
env.close()

When running the obs = env.reset(), Malmo failed to start, here is its crash report (I censored some hardware info):

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 23-5-23 下午10:12
Description: Rendering overlay

java.lang.NullPointerException: "in" is null!
    at java.nio.channels.Channels.checkNotNull(Channels.java:67)
    at java.nio.channels.Channels.newChannel(Channels.java:347)
    at net.minecraft.client.renderer.texture.TextureUtil.readToBuffer(TextureUtil.java:89)
    at net.minecraft.client.renderer.texture.NativeImage.read(NativeImage.java:88)
    at net.minecraft.client.renderer.texture.NativeImage.read(NativeImage.java:80)
    at net.minecraft.client.renderer.texture.SimpleTexture$TextureData.getTextureData(SimpleTexture.java:82)
    at net.minecraft.client.renderer.texture.PreloadedTexture.lambda$new$0(PreloadedTexture.java:21)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
    at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1596)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1067)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1703)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:172)
    Suppressed: java.lang.NullPointerException
        at net.minecraft.resources.SimpleResource.close(SimpleResource.java:113)
        at net.minecraft.client.renderer.texture.SimpleTexture$TextureData.getTextureData(SimpleTexture.java:92)
        ... 7 more

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
    at java.nio.channels.Channels.checkNotNull(Channels.java:67)
    at java.nio.channels.Channels.newChannel(Channels.java:347)
    at net.minecraft.client.renderer.texture.TextureUtil.readToBuffer(TextureUtil.java:89)
    at net.minecraft.client.renderer.texture.NativeImage.read(NativeImage.java:88)
    at net.minecraft.client.renderer.texture.NativeImage.read(NativeImage.java:80)
    at net.minecraft.client.renderer.texture.SimpleTexture$TextureData.getTextureData(SimpleTexture.java:82)
    at net.minecraft.client.renderer.texture.PreloadedTexture.lambda$new$0(PreloadedTexture.java:21)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
    at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1596)

-- Overlay render details --
Details:
    Overlay name: net.minecraft.client.gui.ResourceLoadProgressGui
Stacktrace:
    at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:483)
    at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:972)
    at net.minecraft.client.Minecraft.run(Minecraft.java:593)
    at net.minecraft.client.main.Main.main(Main.java:193)

-- System Details --
Details:
    Minecraft Version: 1.16.5
    Minecraft Version ID: 1.16.5
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_271, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 
    CPUs: 
    JVM Flags: 1 total; -Xmx4G
    Launched Version: ~~NULL~~
    Backend library: LWJGL version 3.2.2 SNAPSHOT
    Backend API: /PCIe/SSE2 GL version 4.6.0 NVIDIA 531.68, NVIDIA Corporation
    GL Caps: Using framebuffer using OpenGL 3.0
    Using VBOs: Yes
    Is Modded: Very likely; Jar signature invalidated
    Type: Client (map_client.txt)
    Graphics mode: fancy
    Resource Packs: 
    Current Language: English (US)
    CPU: 

Have search for a while but haven't find the solution. Can anyone re-products it?

[zhuliwen]

How did you solve it?

[boholder]

How did you solve it?

I just gave up 😂