Crashing When Trying to Play Singleplayer

As soon as I click the play button for singleplayer, it immediately crashes.

Bug Crash Report:

Minecraft Crash Report ----
// This doesn't make any sense!

Time: 6/27/20 9:48 AM
Description: mouseClicked event handler

java.lang.OutOfMemoryError: Java heap space
at java.util.ArrayList.<init>(ArrayList.java:152)
at com.google.common.collect.Lists.newArrayListWithCapacity(Lists.java:190)
at lk$1.a(SourceFile:47)
at lk$1.b(SourceFile:32)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at lo.a(SourceFile:96)
at lo.a(SourceFile:63)
at lo.a(SourceFile:26)
at dae.a(SourceFile:222)
at dae$$Lambda$2893/1203223734.apply(Unknown Source)
at dae.a(SourceFile:171)
at dae.b(SourceFile:150)
at duf.a(SourceFile:85)
at duf.<init>(SourceFile:77)
at duc.b(SourceFile:48)
at dqs.b(SourceFile:321)
at dlx.a(SourceFile:895)
at dqw.e(SourceFile:141)
at dqw$$Lambda$2572/188996359.onPress(Unknown Source)
at dni.b(SourceFile:33)
at dnc.a(SourceFile:16)

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

– Head –
Thread: Render thread
Stacktrace:
at java.util.ArrayList.<init>(ArrayList.java:152)
at com.google.common.collect.Lists.newArrayListWithCapacity(Lists.java:190)
at lk$1.a(SourceFile:47)
at lk$1.b(SourceFile:32)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at le.b(SourceFile:471)
at le.a(SourceFile:32)
at le$1.a(SourceFile:83)
at le$1.b(SourceFile:69)
at lo.a(SourceFile:96)

– Affected screen –
Details:
Screen name: dqw
Stacktrace:
at dqs.a(SourceFile:434)
at dly.a(SourceFile:92)
at dly.c(SourceFile:162)
at dly$$Lambda$2884/362497553.run(Unknown Source)
at amn.execute(SourceFile:94)
at dly.b(SourceFile:162)
at dly$$Lambda$2232/221458108.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3101)
at com.mojang.blaze3d.systems.RenderSystem.flipFrame(SourceFile:109)
at dgy.e(SourceFile:308)
at dlx.e(SourceFile:1041)
at dlx.e(SourceFile:654)
at net.minecraft.client.main.Main.main(SourceFile:215)

– System Details –
Details:
Minecraft Version: 1.16.1
Minecraft Version ID: 1.16.1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 499165416 bytes (476 MB) / 704643072 bytes (672 MB) up to 2147483648 bytes (2048 MB)
CPUs: 4
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.16.1
Backend library: LWJGL version 3.2.2 build 10
Backend API: AMD Radeon R7 Graphics GL version 4.6.13547 Compatibility Profile Context 25.20.15027.9004, ATI Technologies Inc.
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
CPU: 4x AMD FX-9830P RADEON R7, 12 COMPUTE CORES 4C+8G