it said
---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 3/28/20 10:08 PM
Description: Rendering Block Entity

java.lang.NullPointerException: Rendering Block Entity
at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98265_a(SourceFile:110)
at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98281_h(SourceFile:236)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147517_a(SourceFile:20)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:15)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:10)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147549_a(SourceFile:100)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147544_a(SourceFile:92)
at net.minecraft.client.renderer.RenderGlobal.func_147589_a(RenderGlobal.java:483)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1224)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1015)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98265_a(SourceFile:110)
at net.minecraft.tileentity.MobSpawnerBaseLogic.func_98281_h(SourceFile:236)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147517_a(SourceFile:20)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:15)
at net.minecraft.client.renderer.tileentity.TileEntityMobSpawnerRenderer.func_147500_a(SourceFile:10)

-- Block Entity Details --
Details:
Name: MobSpawner // net.minecraft.tileentity.TileEntityMobSpawner
Block type: ID #52 (tile.mobSpawner // net.minecraft.block.BlockMobSpawner)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (-66,38,180), Chunk: (at 14,2,4 in -5,11; contains blocks -80,0,176 to -65,255,191), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Actual block type: ID #52 (tile.mobSpawner // net.minecraft.block.BlockMobSpawner)
Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147549_a(SourceFile:100)
at net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher.func_147544_a(SourceFile:92)
at net.minecraft.client.renderer.RenderGlobal.func_147589_a(RenderGlobal.java:483)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1224)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['Marmol'/348, l='MpServer', x=-26.93, y=70.78, z=172.23]]
Chunk stats: MultiplayerChunkCache: 121, 121
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-16,64,196), Chunk: (at 0,4,4 in -1,12; contains blocks -16,0,192 to -1,255,207), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 701 game time, 701 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 103 total; [EntitySkeleton['Skeleton'/267, l='MpServer', x=-44.97, y=26.00, z=117.44], EntityZombie['Zombie'/268, l='MpServer', x=-42.50, y=22.00, z=121.50], EntityBat['Bat'/269, l='MpServer', x=-41.25, y=42.10, z=137.25], EntityBat['Bat'/270, l='MpServer', x=-36.75, y=38.98, z=133.75], EntityCreeper['Creeper'/271, l='MpServer', x=-41.69, y=24.00, z=144.63], EntityZombie['Zombie'/272, l='MpServer', x=-44.50, y=25.00, z=151.50], EntitySkeleton['Skeleton'/273, l='MpServer', x=-46.50, y=27.00, z=160.50], EntityBat['Bat'/274, l='MpServer', x=-35.44, y=24.95, z=209.59], EntityCreeper['Creeper'/276, l='MpServer', x=-38.50, y=46.00, z=252.50], EntityCreeper['Creeper'/287, l='MpServer', x=-24.13, y=15.00, z=112.56], EntitySkeleton['Skeleton'/288, l='MpServer', x=-25.59, y=37.00, z=131.41], EntityCreeper['Creeper'/289, l='MpServer', x=-22.16, y=37.00, z=131.16], EntitySpider['Spider'/290, l='MpServer', x=-25.28, y=37.00, z=132.78], EntitySkeleton['Skeleton'/291, l='MpServer', x=-23.50, y=46.00, z=134.50], EntityZombie['Zombie'/292, l='MpServer', x=-23.50, y=13.00, z=153.50], EntitySkeleton['Skeleton'/293, l='MpServer', x=-25.75, y=13.00, z=151.91], EntitySkeleton['Skeleton'/294, l='MpServer', x=-27.50, y=13.00, z=152.16], EntitySpider['Spider'/295, l='MpServer', x=-18.50, y=13.00, z=152.50], EntityZombie['Zombie'/296, l='MpServer', x=-26.59, y=14.00, z=147.53], EntitySpider['Spider'/297, l='MpServer', x=-25.19, y=14.00, z=149.50], EntitySkeleton['Skeleton'/298, l='MpServer', x=-23.75, y=22.00, z=200.94], EntityZombie['Zombie'/299, l='MpServer', x=-24.62, y=22.00, z=199.02], EntitySkeleton['Skeleton'/300, l='MpServer', x=-26.50, y=22.00, z=194.84], EntityEnderman['Enderman'/301, l='MpServer', x=-30.50, y=28.62, z=215.73], EntityZombie['Zombie'/302, l='MpServer', x=-25.50, y=29.00, z=227.50], EntityBat['Bat'/303, l='MpServer', x=-24.38, y=48.00, z=238.69], EntitySkeleton['Skeleton'/304, l='MpServer', x=-18.94, y=48.00, z=233.56], EntityBat['Bat'/305, l='MpServer', x=-19.44, y=49.23, z=235.59], EntityBat['Bat'/306, l='MpServer', x=-31.50, y=48.79, z=246.56], EntityEnderman['Enderman'/310, l='MpServer', x=-1.41, y=16.00, z=131.34], EntityZombie['Zombie'/311, l='MpServer', x=-1.50, y=16.00, z=132.56], EntityZombie['Zombie'/312, l='MpServer', x=-4.50, y=16.00, z=130.50], EntityZombie['Zombie'/313, l='MpServer', x=-5.50, y=16.00, z=132.50], EntityPig['Pig'/314, l='MpServer', x=-11.53, y=67.00, z=142.53], EntityPig['Pig'/315, l='MpServer', x=-8.50, y=69.00, z=138.69], EntityPig['Pig'/316, l='MpServer', x=-4.41, y=69.00, z=137.50], EntityCreeper['Creeper'/317, l='MpServer', x=-1.69, y=46.00, z=154.22], EntityPig['Pig'/318, l='MpServer', x=-12.81, y=67.00, z=144.75], EntityZombie['Zombie'/319, l='MpServer', x=-4.00, y=44.00, z=167.56], EntityZombie['Zombie'/320, l='MpServer', x=3.22, y=43.00, z=172.88], EntitySkeleton['Skeleton'/321, l='MpServer', x=-6.53, y=47.00, z=169.88], EntityPig['Pig'/332, l='MpServer', x=1.50, y=73.00, z=95.50], EntityPig['Pig'/333, l='MpServer', x=0.50, y=74.00, z=95.50], EntityPig['Pig'/334, l='MpServer', x=0.50, y=76.00, z=98.50], EntityPig['Pig'/335, l='MpServer', x=0.50, y=81.00, z=100.50], EntityCreeper['Creeper'/336, l='MpServer', x=2.50, y=46.00, z=156.50], EntityZombie['Zombie'/337, l='MpServer', x=2.50, y=46.00, z=161.50], EntityBat['Bat'/338, l='MpServer', x=13.75, y=41.10, z=179.28], EntityZombie['Zombie'/339, l='MpServer', x=5.06, y=47.00, z=188.47], EntityZombie['Zombie'/340, l='MpServer', x=13.50, y=44.00, z=184.28], EntityZombie['Zombie'/342, l='MpServer', x=23.22, y=41.00, z=122.53], EntityZombie['Zombie'/343, l='MpServer', x=20.84, y=40.00, z=126.75], EntityCreeper['Creeper'/344, l='MpServer', x=18.50, y=40.00, z=119.50], EntityZombie['Zombie'/345, l='MpServer', x=21.50, y=40.00, z=131.28], EntityClientPlayerMP['Marmol'/348, l='MpServer', x=-26.93, y=70.78, z=172.23], EntityCreeper['Creeper'/185, l='MpServer', x=-104.63, y=32.00, z=110.78], EntityZombie['Zombie'/186, l='MpServer', x=-103.50, y=27.00, z=190.50], EntityZombie['Zombie'/187, l='MpServer', x=-103.50, y=27.00, z=198.50], EntityBat['Bat'/188, l='MpServer', x=-96.25, y=17.00, z=219.38], EntitySquid['Squid'/195, l='MpServer', x=-80.21, y=61.21, z=145.97], EntitySkeleton['Skeleton'/196, l='MpServer', x=-86.50, y=16.00, z=190.50], EntitySkeleton['Skeleton'/197, l='MpServer', x=-87.50, y=16.00, z=189.50], EntityZombie['Zombie'/198, l='MpServer', x=-80.59, y=22.00, z=189.91], EntityCreeper['Creeper'/199, l='MpServer', x=-88.50, y=16.00, z=193.50], EntitySquid['Squid'/200, l='MpServer', x=-78.49, y=44.05, z=227.33], EntitySquid['Squid'/201, l='MpServer', x=-82.45, y=44.98, z=235.95], EntitySquid['Squid'/202, l='MpServer', x=-83.00, y=46.42, z=224.84], EntitySquid['Squid'/204, l='MpServer', x=-83.36, y=44.38, z=236.38], EntitySquid['Squid'/208, l='MpServer', x=-78.68, y=61.03, z=124.49], EntitySquid['Squid'/209, l='MpServer', x=-78.11, y=57.40, z=123.54], EntityItem['item.item.dyePowder.black'/210, l='MpServer', x=-66.56, y=62.13, z=116.25], EntitySquid['Squid'/211, l='MpServer', x=-78.53, y=56.34, z=130.52], EntitySquid['Squid'/212, l='MpServer', x=-82.37, y=57.77, z=122.21], EntitySkeleton['Skeleton'/213, l='MpServer', x=-74.69, y=36.00, z=140.69], EntitySkeleton['Skeleton'/214, l='MpServer', x=-67.97, y=37.10, z=131.50], EntitySquid['Squid'/215, l='MpServer', x=-76.91, y=57.81, z=133.68], EntitySquid['Squid'/216, l='MpServer', x=-76.73, y=57.27, z=139.35], EntityCreeper['Creeper'/217, l='MpServer', x=-66.47, y=26.00, z=159.91], EntityCreeper['Creeper'/218, l='MpServer', x=-72.50, y=27.00, z=166.50], EntityZombie['Zombie'/219, l='MpServer', x=-67.26, y=26.00, z=160.74], EntityCreeper['Creeper'/220, l='MpServer', x=-66.69, y=21.00, z=189.41], EntityCreeper['Creeper'/221, l='MpServer', x=-67.69, y=21.00, z=190.11], EntityCreeper['Creeper'/222, l='MpServer', x=-68.53, y=21.00, z=191.94], EntityCreeper['Creeper'/223, l='MpServer', x=-65.94, y=21.00, z=188.53], EntityBat['Bat'/224, l='MpServer', x=-67.75, y=29.10, z=177.50], EntityBat['Bat'/225, l='MpServer', x=-65.25, y=23.60, z=187.25], EntityBat['Bat'/226, l='MpServer', x=-77.44, y=21.82, z=192.16], EntityBat['Bat'/227, l='MpServer', x=-71.41, y=21.00, z=196.66], EntitySquid['Squid'/229, l='MpServer', x=-70.79, y=45.35, z=227.31], EntitySquid['Squid'/230, l='MpServer', x=-77.52, y=46.30, z=226.47], EntityZombie['Zombie'/232, l='MpServer', x=-64.50, y=17.00, z=247.50], EntitySkeleton['Skeleton'/243, l='MpServer', x=-48.06, y=33.00, z=114.50], EntityZombie['Zombie'/244, l='MpServer', x=-51.84, y=32.00, z=146.56], EntityCreeper['Creeper'/245, l='MpServer', x=-55.09, y=15.00, z=171.47], EntityZombie['Zombie'/246, l='MpServer', x=-56.75, y=26.00, z=166.66], EntityZombie['Zombie'/247, l='MpServer', x=-63.50, y=27.00, z=162.50], EntitySkeleton['Skeleton'/248, l='MpServer', x=-54.53, y=27.00, z=165.31], EntityZombie['Zombie'/249, l='MpServer', x=-51.53, y=28.00, z=171.90], EntityCreeper['Creeper'/250, l='MpServer', x=-52.50, y=41.00, z=173.50], EntityZombie['Zombie'/251, l='MpServer', x=-52.41, y=13.00, z=182.13], EntitySkeleton['Skeleton'/252, l='MpServer', x=-54.50, y=14.00, z=176.50], EntitySkeleton['Skeleton'/253, l='MpServer', x=-51.63, y=26.00, z=178.88], EntitySkeleton['Skeleton'/254, l='MpServer', x=-54.99, y=40.08, z=175.40]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2444)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:919)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_241, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 156736896 bytes (149 MB) / 357019648 bytes (340 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 13, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAAAAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAAAAAAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJAAAAAAAAA Forge{10.13.4.1558} [Minecraft Forge] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJAAAAAAAAA lightsabers{1.2.2} [Advanced Lightsabers Mod] (AdvancedLightsabers-1.7.10-1.2.2.jar)
GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.6.13587 Compatibility Profile Context 20.3.1 26.20.15029.15007' Renderer: 'Radeon RX 580 Series'
Launched Version: 1.7.10-Forge10.13.4.1558-1.7.10
LWJGL: 2.9.1
OpenGL: Radeon RX 580 Series GL version 4.6.13587 Compatibility Profile Context 20.3.1 26.20.15029.15007, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: Canadian English (Canada)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)