{"record":{"id":"0b3737fa2931cc77","repo":"Pumpkin-MC/Pumpkin","slug":"chunk-serializing-error-0","errorCode":null,"errorMessage":"Chunk serializing error: {0}","messagePattern":"Chunk serializing error: (.+?)","errorType":"error_code","errorClass":"ChunkWritingError","httpStatus":null,"severity":"error","filePath":"crates/pumpkin-world/src/chunk/mod.rs","lineNumber":50,"sourceCode":"    #[error(\"Invalid header\")]\n    InvalidHeader,\n    #[error(\"Region is invalid\")]\n    RegionIsInvalid,\n    #[error(\"Compression error {0}\")]\n    Compression(CompressionError),\n    #[error(\"Tried to read chunk which does not exist\")]\n    ChunkNotExist,\n    #[error(\"Failed to parse chunk from bytes: {0}\")]\n    ParsingError(ChunkParsingError),\n}\n\n#[derive(Error, Debug)]\npub enum ChunkWritingError {\n    #[error(\"Io error: {0}\")]\n    IoError(std::io::Error),\n    #[error(\"Compression error {0}\")]\n    Compression(CompressionError),\n    #[error(\"Chunk serializing error: {0}\")]\n    ChunkSerializingError(String),\n}\n\n#[derive(Error, Debug)]\npub enum CompressionError {\n    #[error(\"Compression scheme not recognised\")]\n    UnknownCompression,\n    #[error(\"Error while working with zlib compression: {0}\")]\n    ZlibError(std::io::Error),\n    #[error(\"Error while working with Gzip compression: {0}\")]\n    GZipError(std::io::Error),\n    #[error(\"Error while working with LZ4 compression: {0}\")]\n    LZ4Error(std::io::Error),\n    #[error(\"Error while working with zstd compression: {0}\")]\n    ZstdError(std::io::Error),\n}\n\n// Clone here cause we want to clone a snapshot of the chunk so we don't block writing for too long","sourceCodeStart":32,"sourceCodeEnd":68,"githubUrl":"https://github.com/Pumpkin-MC/Pumpkin/blob/8d4639e25a57c15e47448ec327c780d41bbf2356/crates/pumpkin-world/src/chunk/mod.rs#L32-L68","documentation":"ChunkWritingError::ChunkSerializingError carries a String message describing a failure to serialize the chunk data structure into bytes before compression and writing. The library throws it when chunk data cannot be converted to the on-disk (NBT) representation.","triggerScenarios":"Saving a chunk whose data violates serialization invariants — e.g. blocks/entities/sections in a state the NBT writer cannot encode.","commonSituations":"Custom or modded chunk content, in-memory chunk state corrupted by a game-logic bug, version mismatches between world format and in-memory representation.","solutions":["Read the embedded String message to identify which part of the chunk failed to serialize.","Validate chunk data (block states, section counts, entity data) before saving.","Update the world-format code if the chunk schema changed recently.","Log and skip the save for the offending chunk to avoid repeated failure."],"exampleFix":"// before\nwriter.write_chunk(pos, &chunk).expect(\"serialize\");\n// after\nif let Err(ChunkWritingError::ChunkSerializingError(msg)) = writer.write_chunk(pos, &chunk) {\n    log::error!(\"chunk {pos:?} failed to serialize: {msg}\");\n}","handlingStrategy":"validation","validationCode":"if chunk.get_block_count() > chunk.capacity() {\n    return Err(\"chunk block count exceeds capacity before save\");\n}","typeGuard":null,"tryCatchPattern":"if let Err(ChunkWritingError::ChunkSerializingError(msg)) = writer.write_chunk(pos, &chunk) {\n    log::error!(\"serialize failed for {pos:?}: {msg}\");\n}","preventionTips":["Validate chunk invariants (sections, block states, entities) before saving.","Keep in-memory representation and world format versions aligned.","Log serialization failures with chunk coordinates to find offending game-logic bugs."],"tags":["serialization","minecraft","nbt","write"],"backgroundTag":"json-marshal-failed","analyzedSha":"8d4639e25a57c15e47448ec327c780d41bbf2356","analyzedAt":"2026-09-09T15:32:22.916Z","contentChangedAt":"2026-09-09T15:32:22.916Z","schemaVersion":2},"datasetVersion":"2026-09-16T04:17:20.429Z"}