# XLSX Error Handling

> Sub-skill of xlsx: Error Handling.

- Skill: `vamseeachanta/xlsx-error-handling` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/xlsx-error-handling`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/xlsx-error-handling/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Data & Analytics
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/xlsx-error-handling

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# Error Handling

## Error Handling


### Common Errors


**Error: InvalidFileException**
- Cause: File is not a valid .xlsx (possibly .xls)
- Solution: Convert to .xlsx or use xlrd for .xls files

**Error: Circular reference**
- Cause: Formula references itself
- Solution: Review formula logic and break the cycle

**Error: #REF! in formulas**
- Cause: Cell reference is invalid (deleted row/column)
- Solution: Use named ranges or validate references

**Error: Memory issues with large files**
- Cause: Loading entire file into memory
- Solution: Use `read_only=True` or `write_only=True` mode