expected ':' at line 1 column 10: Rust serde_json — causes and fixes
Rust serde_json error (' at line 1 column 10): strict JSON checklist, trailing characters, and fast local validation (no upload).
Extra data after JSON (trailing characters) Playbook
Extra data after JSON (trailing characters). Practical troubleshooting runbook for repeatable fixes and safer conversions.
TL;DR: Validate -> locate exact failing spot -> fix the minimal part -> re-validate.
Execution steps
- Validate input locally. Start with a validator or parser-friendly converter.
- Locate root cause. Use line/position/error token to isolate one failing place.
- Apply a minimal fix. Do not refactor all content at once.
- Re-validate and continue. Once clean, convert/export safely.
Recommended tools
Relevant guides
Auto-selected from existing guides for this topic. Need more: search by keyword.
expected ',' or ']' at line 1 column 10: Rust serde_json — causes and fixes
Rust serde_json error (expected ',' or ']' at line 1 column 10): strict JSON checklist, trailing characters, and fast local validation (no upload).
expected value at line 1 column 1: Rust serde_json — causes and fixes
Rust serde_json error (expected value at line 1 column 1): strict JSON checklist, trailing characters, and fast local validation (no upload).
trailing characters at line 1 column 2: Rust serde_json — causes and fixes
Rust serde_json error (trailing characters at line 1 column 2): strict JSON checklist, trailing characters, and fast local validation (no upload).
JSONDecodeError: Extra data: line 1 column 2 (char 1): what it means and how to fix it
Python json JSONDecodeError (Extra data: line 1 column 2 (char 1)): common causes (empty input, extra data, encoding) and fast fixes with local validation (no upload).
JSONDecodeError: Expecting value: line 1 column 1 (char 0): what it means and how to fix it
Python json JSONDecodeError (Expecting value: line 1 column 1 (char 0)): common causes (empty input, extra data, encoding) and fast fixes with local validation (no upload).
JSONDecodeError: Invalid \escape: line 1 column 10 (char 9): what it means and how to fix it
Python json JSONDecodeError (Invalid \escape: line 1 column 10 (char 9)): common causes (empty input, extra data, encoding) and fast fixes with local validation (no upload).
JSONDecodeError: Expecting ',' delimiter: line 1 column 2 (char 1): what it means and how to fix it
Python json JSONDecodeError (Expecting ',' delimiter: line 1 column 2 (char 1)): common causes (empty input, extra data, encoding) and fast fixes with local validation (no upload).
Related actions
- Deep topic hub: Extra data after JSON (trailing characters)
- Decision comparison: Extra data after JSON (trailing characters)
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- Migration path: Extra data after JSON (trailing characters)
- Case study: Extra data after JSON (trailing characters)
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- Pillar for JSON
- Data asset: Extra data after JSON (trailing characters)
- All JSON subtopics
- Search tools for "extra data additional text trailing characters Extra data after JSON (trailing characters)"
Related playbooks
- Flatten nested JSON for CSV export
- HTML instead of JSON (starts with <)
- Invalid escape sequences in JSON
- Extra comma in JSON
- Expecting property name enclosed in double quotes
- Duplicate keys in JSON objects
Related by intent
- Intent hub for Extra data after JSON (trailing characters)
- Execution playbook
- Method comparison
- Alternative flows
- Migration path
- Benchmark baseline
- Case study
- Trend report
- Cluster pillar
- Cross-cluster pillar: CSV
- Linkable data asset
Expert signal
Expert note: Extra data after JSON (trailing characters) usually resolves fastest when triage starts from strict validation and then branches to comparison/alternative paths based on input quality.
Data snapshot 2026
| Metric | Value |
|---|---|
| Intent confidence score | 83/100 |
| Predicted CTR uplift potential | 37% |
| Target crawl depth | < 4 clicks |
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