special characters are not allowed

### Describe the problem

This issue started happening all of a sudden. I was on latest so maybe it pulled a dud image but I pinned it to 2026.7.2 with paper version 26.2 and I am still getting crashing when loading the nether world. I have the logs attached. If someone could help me out that would be greatly appreciated.

I run the container as a pod on kubernetes with a sidecar that handles backups

[mcs1-error.log](https://github.com/user-attachments/files/30567251/mcs1-error.log)

### Container definition

```
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mcs1
  namespace: mc-system
spec:
  serviceName: mcs1-svc
  selector:
    matchLabels:
      app: mcs1
  replicas: 1
  template:
    metadata:
      labels:
        app: mcs1
    spec:
      priorityClassName: critical-apps
      containers:
        - name: mcs1
          image: itzg/minecraft-server:2026.7.2
          env:
            - name: EULA
              value: "TRUE"
            - name: ONLINE_MODE
              value: "TRUE"
            - name: TYPE
              value: "PAPER"
            - name: VERSION
              value: "26.2"
            - name: PAPER_CHANNEL
              value: "default"
            - name: MAX_MEMORY
              value: "2G"
          resources:
            requests:
              memory: 2000Mi
              cpu: 1000m
          ports:
            - containerPort: 25565
          volumeMounts:
            - name: mcs1-data
              mountPath: /data
            - name: mcs1-config
              mountPath: /config
        - name: backup
          image: itzg/mc-backup
          imagePullPolicy: IfNotPresent
          securityContext:
            runAsUser: 1000
          env:
            - name: BACKUP_INTERVAL
              value: "4h"
            - name: PAUSE_IF_NO_PLAYERS
              value: "true"
            - name: DEST_DIR
              value: "/backups/mcs1"
          volumeMounts:
            - mountPath: /data
              name: mcs1-data
              readOnly: true
            - mountPath: /backups
              name: backups
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: host
                    operator: In
                    values:
                    - baremetal
      volumes:
        - name: mcs1-data
          persistentVolumeClaim:
            claimName: mcs1-data
        - name: mcs1-config
          configMap:
            name: mcs1-config
        - name: backups
          persistentVolumeClaim:
            claimName: nfs-mc-backups
```


### Container logs

```
[00:34:11 ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: Could not create world config for minecraft:the_nether
        at io.papermc.paper.configuration.PaperConfigurations.createWorldConfig(PaperConfigurations.java:323) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.level.ServerLevel.lambda$new$0(ServerLevel.java:637) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.world.level.Level.<init>(Level.java:855) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.level.ServerLevel.<init>(ServerLevel.java:637) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.MinecraftServer.createLevel(MinecraftServer.java:743) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at io.papermc.paper.world.PaperWorldLoader.loadInitialWorld(PaperWorldLoader.java:166) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at io.papermc.paper.world.PaperWorldLoader.loadInitialWorlds(PaperWorldLoader.java:131) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:618) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:339) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1267) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:303) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at java.base/java.lang.Thread.run(Unknown Source) ~[?:?]
Caused by: org.spongepowered.configurate.loader.ParsingException: []: Unknown error occurred while loading
        at org.spongepowered.configurate.loader.AbstractConfigurationLoader.load(AbstractConfigurationLoader.java:171) ~[configurate-core-4.2.0.jar:?]
        at org.spongepowered.configurate.loader.AbstractConfigurationLoader.load(AbstractConfigurationLoader.java:69) ~[configurate-core-4.2.0.jar:?]
        at org.spongepowered.configurate.loader.ConfigurationLoader.load(ConfigurationLoader.java:56) ~[configurate-core-4.2.0.jar:?]
        at io.papermc.paper.configuration.Configurations.createWorldConfig(Configurations.java:230) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at io.papermc.paper.configuration.Configurations.createWorldConfig(Configurations.java:208) ~[paper-26.2.jar:26.2-87-a95ae8d]
        at io.papermc.paper.configuration.PaperConfigurations.createWorldConfig(PaperConfigurations.java:321) ~[paper-26.2.jar:26.2-87-a95ae8d]
        ... 11 more
Caused by: unacceptable code point '' (0x0) special characters are not allowed
in "'reader'", position 0
        at org.spongepowered.configurate.yaml.internal.snakeyaml.reader.StreamReader.update(StreamReader.java:207) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:171) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:166) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.reader.StreamReader.peek(StreamReader.java:121) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.scanner.ScannerImpl.scanToNextToken(ScannerImpl.java:1222) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:338) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:242) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.parser.ParserImpl$ParseImplicitDocumentStart.produce(ParserImpl.java:210) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:161) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:152) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.composer.Composer.getSingleNode(Composer.java:166) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:179) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.Yaml.loadFromReader(Yaml.java:508) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.internal.snakeyaml.Yaml.load(Yaml.java:461) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.YamlConfigurationLoader.loadInternal(YamlConfigurationLoader.java:207) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.yaml.YamlConfigurationLoader.loadInternal(YamlConfigurationLoader.java:48) ~[configurate-yaml-4.2.0.jar:?]
        at org.spongepowered.configurate.loader.AbstractConfigurationLoader.load(AbstractConfigurationLoader.java:161) ~[configurate-core-4.2.0.jar:?]
        ... 16 more
[00:34:11 ERROR]: This crash report has been saved to: /data/crash-reports/crash-2026-07-31_00.34.11-server.txt
[00:34:11 INFO]: Stopping server
[00:34:11 INFO]: Saving players
[00:34:11 INFO]: Saving worlds
[00:34:11 INFO]: Saving chunks for level 'ServerLevel[world]'/minecraft:overworld
[00:34:11 INFO]: [ChunkHolderManager] Waiting 60s for chunk system to halt for world 'minecraft:overworld'
[00:34:11 INFO]: [ChunkHolderManager] Halted chunk system for world 'minecraft:overworld'
[00:34:11 INFO]: [ChunkHolderManager] Saving all chunkholders for world 'minecraft:overworld'
[00:34:11 INFO]: [ChunkHolderManager] Saved 0 block chunks, 0 entity chunks, 0 poi chunks in world 'minecraft:overworld' in 0.01s
[00:34:11 INFO]: [ChunkHolderManager] Waiting 60s for chunk I/O to halt for world 'minecraft:overworld'
[00:34:11 INFO]: [ChunkHolderManager] Halted I/O scheduler for world 'minecraft:overworld'
[00:34:11 INFO]: ThreadedAnvilChunkStorage (world): All chunks are saved
[00:34:11 INFO]: ThreadedAnvilChunkStorage: All dimensions are saved
[00:34:11 INFO]: Waiting for all RegionFile I/O tasks to complete...
[00:34:11 INFO]: All RegionFile I/O tasks to complete
[00:34:11 INFO]: [MoonriseCommon] Awaiting termination of worker pool for up to 60s...
[00:34:11 INFO]: [MoonriseCommon] Awaiting termination of I/O pool for up to 60s...
```


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