Game crashed

I believe this link may answer why, it's probably a corrupted entity that crashed the game for you.

Can you attach the crash report?

Yeah. we'll need the full crash report.

Here's the crash report:

Minecraft Crash Report ----
// Sorry 😞

Time: 8/31/20 9:19 AM
Description: Ticking screen

java.lang.NullPointerException: Ticking screen
at drm.d(SourceFile:184)
at drm.j(SourceFile:251)
at drm.g(SourceFile:241)
at dqi.d(SourceFile:46)
at djw.aR(SourceFile:1501)
at doq.a(SourceFile:435)
at djw.q(SourceFile:1501)
at djw.e(SourceFile:996)
at djw.e(SourceFile:656)
at net.minecraft.client.main.Main.main(SourceFile:215)

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

– Head –
Thread: Render thread
Stacktrace:
at drm.d(SourceFile:184)
at drm.j(SourceFile:251)
at drm.g(SourceFile:241)
at dqi.d(SourceFile:46)
at djw.aR(SourceFile:1501)

– Affected screen –
Details:
Screen name: dqi
Stacktrace:
at doq.a(SourceFile:435)

– Affected level –
Details:
All players: 2 total; [dze['mysterioustnt111'/219, l='ClientLevel', x=10008.30, y=101.00, z=9952.51], dzf['Sustor_z'/345, l='ClientLevel', x=9984.70, y=99.00, z=9965.91]]
Chunk stats: Client Chunk Cache: 529, 361
Level dimension: minecraft:overworld
Level spawn location: World: (0,200,0), Chunk: (at 0,12,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 55535 game time, 6000 day time
Server brand: Waterfall <- §9TechMedia Server Core§r
Server type: Non-integrated multiplayer server
Stacktrace:
at dwl.a(SourceFile:449)
at djw.c(SourceFile:2183)
at djw.e(SourceFile:674)
at net.minecraft.client.main.Main.main(SourceFile:215)

– System Details –
Details:
Minecraft Version: 1.16.2
Minecraft Version ID: 1.16.2
Operating System: Mac OS X (x86_64) version 10.15.6
Java Version: 1.8.0_74, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 756087368 bytes (721 MB) / 2080374784 bytes (1984 MB) up to 2147483648 bytes (2048 MB)
CPUs: 4
JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.16.2
Backend library: LWJGL version 3.2.1 build 12
Backend API: AMD Radeon Pro 560 OpenGL Engine GL version 2.1 ATI-3.10.16, ATI Technologies Inc.
GL Caps: Using framebuffer using ARB_framebuffer_object extension
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
GPU Warnings: version: 2.1
Graphics mode: fancy
Resource Packs: vanilla, file/faithful1.16.2.zip
Current Language: English (US)
CPU: 4x Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz

Thank you for your report!
However, this report is Invalid.

Your game, launcher and/or server is modified.
If you can reproduce the issue in a vanilla environment, please create a new ticket - this is a bug tracker for the game, and not a support website.

• Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang Studios or the Bugtracker.

• Any plugin or resource pack issues need to be addressed to the creator of the plugin or resource pack.

• If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run extensively modified server software.

Quick Links:
📓 Issue Guidelines – 🛠 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki
💬 Mojira Subreddit – 💬 Mojira Discord

I didn't use any plugins, but maybe the resource pack is the issue... this has never happened before? Thanks!

But the server uses mods.

Ok, thanks for clearing it up!