[15:57:48] [Server thread/WARN]: Exception loading entity:
q: Loading entity NBT
        at alf.f(SourceFile:1599) ~[server.jar:?]
        at alj.a(SourceFile:441) ~[server.jar:?]
        at alj$$Lambda$2475/0000000000000000.accept(Unknown Source) ~[?:?]
        at t.a(SourceFile:341) ~[server.jar:?]
        at alj.a(SourceFile:440) ~[server.jar:?]
        at alj.b(SourceFile:493) [server.jar:?]
        at alj.a(SourceFile:474) [server.jar:?]
        at cdm.a(SourceFile:375) [server.jar:?]
        at cdm.b(SourceFile:138) [server.jar:?]
        at cdm$$Lambda$2376/0000000000000000.accept(Unknown Source) [server.jar:?]
        at cda.w(SourceFile:478) [server.jar:?]
        at ws.a(SourceFile:603) [server.jar:?]
        at ws$$Lambda$2457/0000000000000000.apply(Unknown Source) [server.jar:?]
        at com.mojang.datafixers.util.Either.lambda$mapLeft$0(Either.java:162) [server.jar:?]
        at com.mojang.datafixers.util.Either$$Lambda$2630/0000000000000000.apply(Unknown Source) [server.jar:?]
        at com.mojang.datafixers.util.Either$Left.map(Either.java:38) [server.jar:?]
        at com.mojang.datafixers.util.Either.mapLeft(Either.java:162) [server.jar:?]
        at ws.a(SourceFile:592) [server.jar:?]
        at ws$$Lambda$2454/0000000000000000.apply(Unknown Source) [server.jar:?]
        at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:642) [?:?]
        at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478) [?:?]
        at wu.b(SourceFile:58) [server.jar:?]
        at wu$$Lambda$2358/0000000000000000.run(Unknown Source) [server.jar:?]
        at ajg.c(SourceFile:144) [server.jar:?]
        at xe$a.c(SourceFile:551) [server.jar:?]
        at ajg.w(SourceFile:118) [server.jar:?]
        at xe$a.w(SourceFile:560) [server.jar:?]
        at xe.d(SourceFile:278) [server.jar:?]
        at net.minecraft.server.MinecraftServer.bc(SourceFile:738) [server.jar:?]
        at net.minecraft.server.MinecraftServer.w(SourceFile:726) [server.jar:?]
        at ajg.bm(SourceFile:103) [server.jar:?]
        at net.minecraft.server.MinecraftServer.v(SourceFile:710) [server.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:663) [server.jar:?]
        at java.lang.Thread.run(Thread.java:847) [?:?]
Caused by: java.lang.RuntimeException
        at asy$$Lambda$2873/0000000000000000.get(Unknown Source) ~[?:?]
        at java.util.Optional.orElseThrow(Optional.java:401) ~[?:?]
        at asy.<init>(SourceFile:33) ~[server.jar:?]
        at ame.a(SourceFile:97) ~[server.jar:?]
        at ame.<init>(SourceFile:85) ~[server.jar:?]
        at azu.a(SourceFile:201) ~[server.jar:?]
        at alo.a(SourceFile:604) ~[server.jar:?]
        at alp.a(SourceFile:403) ~[server.jar:?]
        at ald.a(SourceFile:111) ~[server.jar:?]
        at azp.a(SourceFile:184) ~[server.jar:?]
        at azu.a(SourceFile:490) ~[server.jar:?]
        at alf.f(SourceFile:1590) ~[server.jar:?]
        ... 33 more