It continuously crashes it's been happening for quite some time and I can't fix it. I can't drop files so I'll just put the report here.

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 9/8/19 1:58 PM
Description: Rendering overlay

n: Non [a-z0-9/._-] character in path of location: minecraft:block/sword_custom/Texture
at qv.<init>(SourceFile:38)
at qv.<init>(SourceFile:43)
at doe.a(SourceFile:181)
at doe.a(SourceFile:190)
at doe$$Lambda$1737/1723096724.accept(Unknown Source)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at doe.a(SourceFile:185)
at dys.a(SourceFile:195)
at dys$$Lambda$1733/1604330663.apply(Unknown Source)
at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)
at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1612)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at dys.<init>(SourceFile:195)
at dyt.a(SourceFile:45)
at dyt.b(SourceFile:16)
at xl.a(SourceFile:11)
at xl$$Lambda$1627/1966930659.get(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1582)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1574)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1689)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

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

– Head –
Thread: Client thread
Stacktrace:
at qv.<init>(SourceFile:38)
at qv.<init>(SourceFile:43)
at doe.a(SourceFile:181)
at doe.a(SourceFile:190)
at doe$$Lambda$1737/1723096724.accept(Unknown Source)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at doe.a(SourceFile:185)
at dys.a(SourceFile:195)
at dys$$Lambda$1733/1604330663.apply(Unknown Source)
at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267)
at java.util.HashMap$ValueSpliterator.forEachRemaining(HashMap.java:1612)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
at dys.<init>(SourceFile:195)
at dyt.a(SourceFile:45)
at dyt.b(SourceFile:16)
at xl.a(SourceFile:11)
at xl$$Lambda$1627/1966930659.get(Unknown Source)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1582)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1574)

– Overlay render details –
Details:
Overlay name: dcb
Stacktrace:
at dnc.a(SourceFile:676)
at cyc.e(SourceFile:954)
at cyc.b(SourceFile:410)
at net.minecraft.client.main.Main.main(SourceFile:155)

– Affected level –
Details:
All players: 12 total; [dmp['Harisankar7'/490638, l='MpServer', x=1471.48, y=17.00, z=1019.23], dmq['Waffles1514'/490281, l='MpServer', x=1470.49, y=17.00, z=1019.69], dmq['OhCecil666'/490307, l='MpServer', x=1469.76, y=18.19, z=998.97], dmq['UwU_MilkyBoi'/481380, l='MpServer', x=1429.07, y=17.00, z=1016.33], dmq['DaBlobIsBack'/475751, l='MpServer', x=1429.30, y=18.00, z=1009.78], dmq['Zeke_FoxFire'/414159, l='MpServer', x=1472.95, y=17.00, z=996.15], dmq['Darkhood1000'/488418, l='MpServer', x=1427.59, y=18.00, z=1008.00], dmq['DivineGhoul'/490533, l='MpServer', x=1434.36, y=17.00, z=993.55], dmq['HeyHey13th'/480744, l='MpServer', x=1472.03, y=18.22, z=1013.58], dmq['FlamingSlushee'/427770, l='MpServer', x=1468.61, y=16.57, z=1022.57], dmq['missingname0'/490477, l='MpServer', x=1478.77, y=16.43, z=1004.48], dmq['SkyR0GU3'/490507, l='MpServer', x=1460.08, y=16.82, z=1014.36]]
Chunk stats: Client Chunk Cache: 18225, 82
Level dimension: minecraft:overworld
Level name: MpServer
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options: {}
Level spawn location: World: (1418,17,1004), Chunk: (at 10,1,12 in 88,62; contains blocks 1408,0,992 to 1423,255,1007), Region: (2,1; contains chunks 64,32 to 95,63, blocks 1024,0,512 to 1535,255,1023)
Level time: 80144 game time, 114858766 day time
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: adventure (ID 2). Hardcore: false. Cheats: false
Server brand: BungeeCord (git:BungeeCord-Bootstrap:1.14-SNAPSHOT:9e76966:1420) <- Paper
Server type: Non-integrated multiplayer server

– System Details –
Details:
Minecraft Version: 1.14.4
Minecraft Version ID: 1.14.4
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: 1104419784 bytes (1053 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
CPUs: 8
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: 1.14.4
LWJGL: 3.2.2 build 10
OpenGL: GeForce GT 720/PCIe/SSE2 GL version 4.6.0 NVIDIA 391.35, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: vanilla
Current Language: English (United Kingdom)
CPU: 8x Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz