Crash when trying to block Shulker projectile. Minecraft 1.18.2 BasicShields-1.3.1-1.18.2

I think it's because the reflect damage, but the shulker is already dead and the projectile is still coming.

`---- Minecraft Crash Report ----
// Why did you do that?

Time: 24/03/2022, 07:54
Description: Ticking entity

java.lang.NullPointerException: Cannot invoke "net.minecraft.class_1297.method_5643(net.minecraft.class_1282, float)" because "attacker" is null
at com.github.crimsondawn45.basicshields.module.VanillaModule.lambda$registerContent$0(VanillaModule.java:66)
at com.github.crimsondawn45.fabricshieldlib.lib.event.ShieldBlockCallback.lambda$static$0(ShieldBlockCallback.java:22)
at net.minecraft.class_1309.handler$bih000$damage(class_1309.java:9152)
at net.minecraft.class_1309.method_5643(class_1309.java)
at net.minecraft.class_1657.method_5643(class_1657.java:925)
at net.minecraft.class_3222.method_5643(class_3222.java:704)
at net.minecraft.class_1678.method_7454(class_1678.java:304)
at net.minecraft.class_1676.method_7488(class_1676.java:148)
at net.minecraft.class_1678.method_7488(class_1678.java:322)
at net.minecraft.class_1678.method_5773(class_1678.java:237)
at net.minecraft.class_3218.method_18762(class_3218.java:702)
at net.minecraft.class_1937.method_18472(class_1937.java:485)
at net.minecraft.class_3218.method_31420(class_3218.java:363)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:331)
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:907)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:851)
at net.minecraft.class_1132.method_3748(class_1132.java:97)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:697)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:273)
at java.base/java.lang.Thread.run(Thread.java:833)

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

-- Head --
Thread: Server thread
Stacktrace:
at com.github.crimsondawn45.basicshields.module.VanillaModule.lambda$registerContent$0(VanillaModule.java:66)
at com.github.crimsondawn45.fabricshieldlib.lib.event.ShieldBlockCallback.lambda$static$0(ShieldBlockCallback.java:22)
at net.minecraft.class_1309.handler$bih000$damage(class_1309.java:9152)
at net.minecraft.class_1309.method_5643(class_1309.java)
at net.minecraft.class_1657.method_5643(class_1657.java:925)
at net.minecraft.class_3222.method_5643(class_3222.java:704)
at net.minecraft.class_1678.method_7454(class_1678.java:304)
at net.minecraft.class_1676.method_7488(class_1676.java:148)
at net.minecraft.class_1678.method_7488(class_1678.java:322)
at net.minecraft.class_1678.method_5773(class_1678.java:237)
at net.minecraft.class_3218.method_18762(class_3218.java:702)
at net.minecraft.class_1937.method_18472(class_1937.java:485)
at net.minecraft.class_3218.method_31420(class_3218.java:363)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:331)

-- Entity being ticked --
Details:
Entity Type: minecraft:shulker_bullet (net.minecraft.class_1678)
Entity ID: 5847
Entity Name: Shulker Bullet
Entity's Exact location: -905.04, 59.06, -2211.08
Entity's Block location: World: (-906,59,-2212), Section: (at 6,11,12 in -57,3,-139; chunk contains blocks -912,0,-2224 to -897,255,-2209), Region: (-2,-5; contains chunks -64,-160 to -33,-129, blocks -1024,0,-2560 to -513,255,-2049)
Entity's Momentum: 0.18, -0.00, -0.02
Entity's Passengers: []
Entity's Vehicle: null
Stacktrace:
at net.minecraft.class_1937.method_18472(class_1937.java:485)
at net.minecraft.class_3218.method_31420(class_3218.java:363)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:331)
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:907)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:851)
at net.minecraft.class_1132.method_3748(class_1132.java:97)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:697)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:273)
at java.base/java.lang.Thread.run(Thread.java:833)

-- Affected level --
Details:
All players: 1 total; [class_3222['crest93'/184, l='ServerLevel[Skyblock 4.10]', x=-904.29, y=59.00, z=-2210.95]]
Chunk stats: 2348
Level dimension: minecraft:the_end
Derived: true
Level spawn location: World: (8,64,7), Section: (at 8,0,7 in 0,4,0; chunk 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: 5323241 game time, 1837772 day time
Level name: Skyblock 4.10
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Level weather: Rain time: 71258 (now: false), thunder time: 101973 (now: false)
Known server brands: vanilla, fabric
Level was modded: true
Level storage version: 0x04ABD - Anvil
Stacktrace:
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:907)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:851)
at net.minecraft.class_1132.method_3748(class_1132.java:97)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:697)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:273)
at java.base/java.lang.Thread.run(Thread.java:833)

-- System Details --
Details:
Minecraft Version: 1.18.2
Minecraft Version ID: 1.18.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
Memory: 1310504912 bytes (1249 MiB) / 2684354560 bytes (2560 MiB) up to 2684354560 bytes (2560 MiB)
CPUs: 4
Processor Vendor: GenuineIntel
Processor Name: Intel(R) Core(TM) i5 CPU M 460 @ 2.53GHz
Identifier: Intel64 Family 6 Model 37 Stepping 5
Microarchitecture: Westmere (Client)
Frequency (GHz): 2.53
Number of physical packages: 1
Number of physical CPUs: 2
Number of logical CPUs: 4
Graphics card #0 name: NVIDIA GeForce 310M
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 1024.00
Graphics card #0 deviceId: 0x0a70
Graphics card #0 versionInfo: DriverVersion=21.21.13.4201
Memory slot #0 capacity (MB): 2048.00
Memory slot #0 clockSpeed (GHz): 1.07
Memory slot #0 type: DDR3
Memory slot #1 capacity (MB): 4096.00
Memory slot #1 clockSpeed (GHz): 1.07
Memory slot #1 type: DDR3
Virtual memory max (MB): 10550.50
Virtual memory used (MB): 7405.37
Swap memory total (MB): 4608.00
Swap memory used (MB): 519.21
JVM Flags: 14 total; -XX:+UnlockExperimentalVMOptions -XX:-UseParallelGC -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:+ParallelRefProcEnabled -Xms2048M -Xmx2560M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M
Fabric Mods:
actuallyunbreaking: Actually Unbreaking 1.18.2-0.4.0
advanced_runtime_resource_pack: Runtime Resource Pack 0.5.5
airaffinity: AirAffinity 1.18.2-Fabric-v1.0.0
allarrowsinfinityfix: All Arrows Infinity Fix 1.0.0
alwaysawitherskull-fabric: Always a Wither Skull (Fabric) 1.4
amecsapi: Amecs API 1.3.5+mc22w06a
anvil_fix: AnvilFix 1.3.0
appleskin: AppleSkin 2.4.0+mc1.18.2
architectury: Architectury 4.1.34
attributefix: AttributeFix 14.0.1
autoharvest: autoharvest 1.3.2
bagofholding: Bag Of Holding 3.1.0
balm-fabric: Balm 3.0.0+0
basicshields: Basic Shields [Fabric] 1.3.1-1.18.2
beenfo: Beenfo 1.18.2-fabric0.47.10-1.3.3
betterspawnercontrol-fabric: Better Spawner Control (Fabric) 1.6
blue_endless_jankson: jankson 1.2.1
bookshelf: Bookshelf 13.0.7
bosses_of_mass_destruction: Bosses of Mass Destruction (Beta) 1.3.6-1.18.2
bowinfinityfix: Bow Infinity Fix rv11
cardinal-components: Cardinal Components API 4.1.4
cardinal-components-base: Cardinal Components API (base) 4.1.4
cardinal-components-block: Cardinal Components API (blocks) 4.1.4
cardinal-components-chunk: Cardinal Components API (chunks) 4.1.4
cardinal-components-entity: Cardinal Components API (entities) 4.1.4
cardinal-components-item: Cardinal Components API (items) 4.1.4
cardinal-components-level: Cardinal Components API (world saves) 4.1.4
cardinal-components-scoreboard: Cardinal Components API (scoreboard) 4.1.4
cardinal-components-world: Cardinal Components API (worlds) 4.1.4
carrier: Carrier 1.10.0
cleardespawn: Clear Despawn 1.1.7
cloth-basic-math: cloth-basic-math 0.6.0
cloth-config: Cloth Config v6 6.2.57
cloth-config-lite: cloth-config-lite 2.0.6
clumps: Clumps 8.0.0+7
coat: Coat 1.0.0-beta.17+mc1.18.2
collective-fabric: Collective (Fabric) 4.25
com_electronwill_night-config_core: core 3.6.3
com_electronwill_night-config_toml: toml 3.6.3
com_eliotlash_mclib_mclib: mclib 18
com_eliotlash_molang_molang: molang 18
com_github_luben_zstd-jni: zstd-jni 1.5.2-2
com_moandjiezana_toml_toml4j: toml4j 0.7.2
controlling: Controlling For Fabric 9.0+17
craftingcraft: CraftingCraft 12.0.0
crawl: Crawl 0.10.2
crowdin-translate: CrowdinTranslate 1.4+1.18.2
customskinloader: CustomSkinLoader 14.13-SNAPSHOT-317
dark-enchanting: Dark Enchanting 0.6.3+1.18
dashloader: DashLoader 3.0.1+1.18
dev_quantumfusion_dashloader_dashloader-core: dashloader-core 1.3.0
dev_quantumfusion_hyphen: hyphen 0.2.0
diggusmaximus: Diggus Maximus 1.5.4-1.18
doubledoors-fabric: Double Doors (Fabric) 3.3
durability101: Durability101 0.0.4
dynamicfps: Dynamic FPS 2.1.0
easymagic: Easy Magic 3.3.0
eldritch_mobs: Eldritch Mobs 1.11.0
elytranofall: ElytraNoFall 1.18.2-Fabric-v1.0.0
elytratrinket: Elytra Trinket 3.0.0-1.18.1
enchantingcommands-fabric: Enchanting Commands (Fabric) 1.7
enchantinginfuser: Enchanting Infuser 3.2.0
enchdesc: EnchantmentDescriptions 10.0.2
enriched: Enriched 2.3.0
enriched-infusions: Enriched Infusions 1.1
entityoutliner: Entity Outliner 1.2.1
exenchants: Extended Enchantments 0.0.2
expanded_armor_enchanting: Expanded Armor Enchanting 1.0.2
expanded_axe_enchanting: Expanded Axe Enchanting 1.0.3
expanded_trident_enchanting: Expanded Trident Enchanting 1.0.3
expanded_weapon_enchanting: Expanded Weapon Enchanting 1.0.2
expandedstorage: Expanded Storage 7.3.11
extended_armor_bars: Extended Armor Bars 1.2.1
extensibleenums: Extensible Enums 3.0.0
fabric: Fabric API 0.48.0+1.18.2
fabric-api-base: Fabric API Base 0.4.4+d7c144a860
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.5.7+d7c144a860
fabric-biome-api-v1: Fabric Biome API (v1) 8.0.3+801ec85b60
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.12+3ac43d9560
fabric-command-api-v1: Fabric Command API (v1) 1.1.9+d7c144a860
fabric-commands-v0: Fabric Commands (v0) 0.2.8+b4f4f6cd60
fabric-containers-v0: Fabric Containers (v0) 0.1.21+d7c144a860
fabric-content-registries-v0: Fabric Content Registries (v0) 3.0.2+d82b939260
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.11+3ac43d9560
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.17+2540745460
fabric-entity-events-v1: Fabric Entity Events (v1) 1.4.8+d7c144a860
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.19+d7c144a860
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.13+d7c144a860
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.13+d7c144a860
fabric-item-api-v1: Fabric Item API (v1) 1.3.3+691a79b560
fabric-item-groups-v0: Fabric Item Groups (v0) 0.3.10+3ac43d9560
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.12+54e5b2ec60
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.10+b4f4f6cd60
fabric-language-kotlin: Fabric Language Kotlin 1.7.1+kotlin.1.6.10
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.0.2+2540745460
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.11+d7c144a860
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.0.4+d1027f7d60
fabric-models-v0: Fabric Models (v0) 0.3.6+d7c144a860
fabric-networking-api-v1: Fabric Networking API (v1) 1.0.21+d882b91560
fabric-networking-v0: Fabric Networking (v0) 0.3.8+b4f4f6cd60
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 2.0.3+40c91ec860
fabric-particles-v1: Fabric Particles (v1) 0.2.12+526dc1ac60
fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.9.8+0d9ab37260
fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.13+d882b91560
fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.17+d8c7b9ae60
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.11+b4f4f6cd60
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.7+d7c144a860
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 2.0.2+54e5b2ec60
fabric-rendering-v0: Fabric Rendering (v0) 1.1.13+b4f4f6cd60
fabric-rendering-v1: Fabric Rendering (v1) 1.10.7+54e5b2ec60
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.0.2+d1027f7d60
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.18+2de5574560
fabric-screen-api-v1: Fabric Screen API (v1) 1.0.10+d882b91560
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.14+40c91ec860
fabric-textures-v0: Fabric Textures (v0) 1.0.12+3ac43d9560
fabric-transfer-api-v1: Fabric Transfer API (v1) 1.5.14+cca23f9360
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 1.0.0+40c91ec860
fabricloader: Fabric Loader 0.13.3
fabricshieldlib: Fabric Shield Lib 1.5.3-1.18
fabrilousupdater: FabrilousUpdater 2.6+1.18.2
fallingtree: FallingTree 3.4.1
fasterfurnaces: Faster Furnaces Mod 1.0.1
ferritecore: FerriteCore 4.2.0
fertilization: Fertilization 8.0.0
fiber: fiber 0.23.0-2
forgeconfigapiport: Forge Config API Port 3.2.0
gbfabrictools: GBfabrictools 1.3.4+1.18.2
geckolib3: Geckolib 3.0.35
gobber2: Gobber2 2.5.68
hardcorequesting: Hardcore Questing Mode 1.18.2-5.10.0
harvest_scythes: Harvest Scythes 2.5.0
here-be-no-dragons: Here be no Dragons! 1.0.0
indium: Indium 1.0.2+mc1.18.2
infinitevillagertrading: InfiniteVillagerTrading 1.18.2-fabric0.47.10-1.1
inventoryhud: Inventory HUD + 3.4.2
inventorysorter: Inventory Sorter 1.8.6-1.18
inventorytotem-fabric: Inventory Totem (Fabric) 1.5
jankson: Jankson 4.0.0+j1.2.0
java: Java HotSpot(TM) 64-Bit Server VM 17
justenoughkeys: Just Enough Keys 0.5.3
kyrptconfig: Kyrpt Config 1.4.2-1.18
libblockattributes_core: LibBlockAttributes (Core) 0.10.2
libblockattributes_fluids: LibBlockAttributes (Fluids) 0.10.2
libgui: LibGui 5.3.1+1.18
libninepatch: LibNinePatch 1.1.0
lithium: Lithium 0.7.9
maelstrom_library: Maelstrom Library 1.2.4-1.18.2
midnightlib: MidnightLib 0.4.0
minecraft: Minecraft 1.18.2
mm: Manningham Mills 2.3
mob_catcher: Mob Catcher 1.1.26
modmanager: Mod Manager 1.2.3+1.18
modmenu: Mod Menu 3.1.0
mousewheelie: Mouse Wheelie 1.8.3+mc1.18.2
multipart_entities: MultipartEntities 1.1.5-1.18.2
ninjaphenix_container_lib: NinjaPhenix's Container Library 1.3.0
omega-config: OmegaConfig 1.2.3-1.18.1
omega-config-gui: Omega Config GUI 1.2.3-1.18.1
org_jetbrains_annotations: annotations 19.0.0
org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 1.6.10
org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 1.6.10
org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 1.6.10
org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 1.6.10
org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.5.2
org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.5.2
org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm: kotlinx-serialization-cbor-jvm 1.3.1
org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.3.1
org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.3.1
org_joml_joml: joml 1.10.2
oro_config: OroArmor Config 3.1.0
overpoweredmending: OverpoweredMending 2.4.1
owo: oωo 0.6.0+1.18
patchouli: Patchouli 1.18.2-66-FABRIC
phosphor: Phosphor 0.8.1
polymorph: Polymorph 0.0.19-1.18.1
pugh_lib: Pugh Lib 1.3.0
pugh_tools: Pugh Tools 1.2.2
puzzleslib: Puzzles Lib 3.3.1
quartzelv: Quartz Elevator 2.1.1+1.18
quickshulker: Quick Shulker 1.3.6-1.18
retraining: Retraining 1.1.0
rib: The Real Infinity Bow 1.1.0-1.18.1
rightclickharvest: Right Click Harvest 1.5.1
roughlyenoughitems: Roughly Enough Items 8.0.442
runelic: Runelic 11.0.1
securecrops: Secure Crops [Fabric] 0.2.0-1.18.x
sheepconsistency: Sheep Consistency 1.0.4
shulkerutils: shulkerutils 1.0.4-1.18
sodium: Sodium 0.4.1+build.15
spellbound: Spellbound 1.8.0
stacc: Stacc 1.3.0
stacker: Stacker 2.1.3
stylisheffects: Stylish Effects 3.1.0
things: Things 0.2.16+1.18
tooltipfix: ToolTip Fix 1.0.4-1.18
totemmod: Wither Totems Mod 0.3.5-1.18.2-pre2
tradingpost: Trading Post 3.2.0
trinketofundying: Trinket of Undying 2.0.1-1.18
trinkets: Trinkets 3.3.0
trinketshulkerboxes: Trinket Shulker Boxes 2.0.1-1.18.1
tweed4_annotated: tweed4_annotated 1.3.0+mc1.18.2
tweed4_base: tweed4_base 1.4.1+mc1.18.2
tweed4_data: tweed4_data 1.2.1+mc1.18.2
tweed4_data_hjson: tweed4_data_hjson 1.1.0+mc1.18.2
tweed4_tailor_coat: tweed4_tailor_coat 1.1.1+mc1.18.2
tweed4_tailor_screen: tweed4_tailor_screen 1.0.2+mc1.18.2
upgradedechests: Upgraded Ender Chests 1.0.3-1.18
upgradedshulkers: Upgraded Shulkers 1.1.1-1.18
villagernames: Villager Names 4.0.3
visualoverhaul: VisualOverhaul 4.1.0
ward_blocks: Ward Blocks 1.2.28
waystones: Waystones 2.5.0
worldedit: WorldEdit 7.2.10+1742f98
worldeditcui: WorldEditCUI 1.18.2+01
wthit: wthit 4.8.0
xaerominimap: Xaero's Minimap 22.3.0
xaeroworldmap: Xaero's World Map 1.20.3.1
xray: XrayMod 2.0.1
xtraarrows: Xtra Arrows 1.8
yigd: You're in Grave Danger 1.3.1
Server Running: true
Player Count: 1 / 8; [class_3222['crest93'/184, l='ServerLevel[Skyblock 4.10]', x=-904.29, y=59.00, z=-2210.95]]
Data Packs: vanilla, file/skyblockDatapack (incompatible), Fabric Mods
World Generation: Stable
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fabric'; Server brand changed to 'fabric'`

Yeah, I forgot to put a null check on the part of the code that damages what tried to damage you.

This is a duplicate of another issue & has been fixed in the latest commit that will be included in 1.4.0