[Render thread/ERROR] (Minecraft) Reported exception thrown!
net.minecraft.util.crash.CrashException: mouseReleased event handler
at net.minecraft.client.gui.screen.Screen.wrapScreenError(Screen.java:414) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.Mouse.onMouseButton(Mouse.java:100) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.Mouse.method_22686(Mouse.java:169) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.util.thread.ThreadExecutor.execute(ThreadExecutor.java:102) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.Mouse.method_22684(Mouse.java:169) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:43) ~[lwjgl-glfw-3.3.1.jar:build 7]
at org.lwjgl.system.JNI.invokeV(Native Method) ~[lwjgl-3.3.1.jar:build 7]
at org.lwjgl.glfw.GLFW.glfwWaitEventsTimeout(GLFW.java:3474) ~[lwjgl-glfw-3.3.1.jar:build 7]
at com.mojang.blaze3d.systems.RenderSystem.limitDisplayFPS(RenderSystem.java:237) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.MinecraftClient.render(MinecraftClient.java:1244) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.MinecraftClient.run(MinecraftClient.java:802) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.main.Main.main(Main.java:250) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:468) ~[fabric-loader-0.14.22.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.22.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.22.jar:?]
at net.fabricmc.devlaunchinjector.Main.main(Main.java:86) ~[dev-launch-injector-0.2.1+build.8.jar:?]
Caused by: java.lang.NullPointerException: Cannot invoke "me.x150.ul.UltralightViewable.mouseClicked(int, int, int)" because "this.ulm" is null
at me.x150.ul.HtmlScreen.mouseReleased(HtmlScreen.java:63) ~[main/:?]
at net.minecraft.client.Mouse.method_1605(Mouse.java:100) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
at net.minecraft.client.gui.screen.Screen.wrapScreenError(Screen.java:409) ~[minecraft-merged-project-root-1.20.1-net.fabricmc.yarn.1_20_1.1.20.1+build.10-v2.jar:?]
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