gchq/CyberChef

bug(AMF Encode): Uncaught Error Value cannot be set on this type [Qe]

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#2,491 opened on Jun 4, 2026

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 (0 comments) (0 reactions) (0 assignees)JavaScript (3,944 forks)batch import
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Description

To reproduce that, drag AMF Encode and set input to {"a": []}

as you can see an uncaught error look like that

AMF Encode - Error in https://gchq.github.io/CyberChef/modules/Encodings.js on line 2.<br><br>Message: Value cannot be set on this type [Qe]

Direct Test Link:

Contributor guide

Research direction
Inspect the AMF Encode function in Encodings.js, specifically the handling of empty arrays in JSON input.
Tech stack
javascript
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70