{"record":{"id":"8bdeeaef84701762","repo":"Pumpkin-MC/Pumpkin","slug":"error-serializing-chunk-0","errorCode":null,"errorMessage":"Error serializing chunk: {0}","messagePattern":"Error serializing chunk: (.+?)","errorType":"error_code","errorClass":"ChunkSerializingError","httpStatus":null,"severity":"error","filePath":"crates/pumpkin-world/src/chunk/mod.rs","lineNumber":933,"sourceCode":"            .rev()\n            .find(|(_, sub)| !sub.has_only_air())\n            .map_or(0, |(idx, _)| idx)\n    }\n}\n\n#[derive(Error, Debug)]\npub enum ChunkParsingError {\n    #[error(\"Failed reading chunk status {0}\")]\n    FailedReadStatus(pumpkin_nbt::Error),\n    #[error(\"The chunk isn't generated yet\")]\n    ChunkNotGenerated,\n    #[error(\"Error deserializing chunk: {0}\")]\n    ErrorDeserializingChunk(String),\n}\n\n#[derive(Error, Debug)]\npub enum ChunkSerializingError {\n    #[error(\"Error serializing chunk: {0}\")]\n    ErrorSerializingChunk(pumpkin_nbt::Error),\n}\n\n#[cfg(test)]\nmod tests {\n    use super::ChunkSections;\n    use crate::chunk::palette::BlockPalette;\n    use pumpkin_data::{Block, block_properties::has_random_ticks};\n\n    #[test]\n    fn random_tick_cache_initializes_from_palette_contents() {\n        let mut sections = vec![BlockPalette::default(), BlockPalette::default()];\n        sections[1].set(0, 0, 0, Block::LAVA.default_state.id);\n\n        let (cache, _mask) = ChunkSections::build_random_tick_sections_cache(&sections);\n        let cache = cache.unwrap();\n        assert!(!cache[0].is_randomly_ticking());\n        assert!(cache[1].random_ticking_fluid_count > 0);","sourceCodeStart":915,"sourceCodeEnd":951,"githubUrl":"https://github.com/Pumpkin-MC/Pumpkin/blob/8d4639e25a57c15e47448ec327c780d41bbf2356/crates/pumpkin-world/src/chunk/mod.rs#L915-L951","documentation":"Variant `ErrorSerializingChunk` of `ChunkSerializingError` in pumpkin-world. It wraps a `pumpkin_nbt::Error` raised while writing a `ChunkData` into NBT for persistence. The library throws it when converting chunk sections/palettes/block entities into the NBT representation fails during save.","triggerScenarios":"Saving a chunk when NBT writing fails — e.g. invalid tag values, oversized data, or I/O-backed NBT writer errors.","commonSituations":"Disk-full or read-only world directory during autosave, in-memory chunk data violating NBT invariants after a bug or memory corruption.","solutions":["Check the wrapped pumpkin_nbt::Error for the failing write operation","Verify disk space and write permissions on the world save path","If reproducible, capture the chunk state and file a bug — valid chunk data should always serialize"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":"matches!(err, ChunkSerializingError::ErrorSerializingChunk(_))","tryCatchPattern":"match save_chunk(&chunk) {\n    Err(ChunkSerializingError::ErrorSerializingChunk(e)) => { error!(\"chunk save failed: {e}\"); /* keep chunk in memory for retry */ }\n    Ok(()) => {},\n}","preventionTips":["Ensure the world directory is writable by the server process","Monitor free disk space before autosave windows","Retain unsaved chunk state so failed saves can be retried"],"tags":["serialization","nbt","chunks"],"backgroundTag":"json-marshal-failed","analyzedSha":"8d4639e25a57c15e47448ec327c780d41bbf2356","analyzedAt":"2026-09-09T15:32:22.916Z","contentChangedAt":"2026-09-09T15:32:22.916Z","schemaVersion":2},"datasetVersion":"2026-09-17T15:17:12.973Z"}