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 (34,843 stars) (3,944 forks)batch import
bughelp wanted

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

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
Research direction
Inspect the AMF Encode function in Encodings.js, specifically the handling of empty arrays in JSON input.