itzg/mc-image-helper

cf: Improve error message when mod page given for modpack

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#685 opened on Dec 31, 2025

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Description

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This is driving me nuts. I get the following error and I have made sure the API key is correct

[init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x 2 1000 1000 0 Dec 31 13:59 /data' [init] Image info: buildtime=2025-12-31T20:47:01.528Z,version=java21,revision=320ad0906f6c0494ca8b9d165bd9942fe8e09728 [mc-image-helper] 15:39:34.574 ERROR : Invalid parameter provided for 'install-curseforge' command: Unexpected CF page URL structure: https://www.curseforge.com/minecraft/mc-mods/timeless-and-classics-zero/files/7278003 [init] [ERROR] Failed to auto-install CurseForge modpack

Contributor guide

Research direction
Investigate the CurseForge URL parsing logic to detect when a mod page URL is provided instead of a modpack page, and generate a clear error message guiding the user to use the correct modpack URL.
Tech stack
java
Domain
clibackend
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
GitJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80