What causes "此分类不存在" in DIYgod/RSSHub?

Use one of the documented valid cid values listed in the categories object (1,2,3,5,6,7,9,10,12,13,14,16,17,18,19,20,21,22).

DIYgod/RSSHub · error · InvalidParameterError

此分类不存在

Error message

此分类不存在

What it means

An `InvalidParameterError` at lib/routes/wnacg/common.tsx:37 when the `cid` path parameter is provided but is not a key in the `categories` object. Valid keys are: 1, 2, 3, 5, 6, 7, 9, 10, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22 (note gaps at 4, 8, 11, 15 — these are intentionally absent). The check uses `Object.keys(categories).includes(cid)` where keys are strings, matching the string `cid` from the route param.

Source

Thrown at lib/routes/wnacg/common.tsx:37

    10: '雜誌&短篇 漢化',
    12: '同人誌 日語',
    13: '單行本 日語',
    14: '雜誌&短篇 日語',
    16: '同人誌 English',
    17: '單行本 English',
    18: '雜誌&短篇 English',
    19: '韓漫',
    20: '韓漫 漢化',
    21: '韓漫 生肉',
    22: '同人誌 3D漫畫',
};

const baseUrl = 'https://www.wnacg.com';

export async function handler(ctx) {
    const { cid, tag } = ctx.req.param();
    if (cid && !Object.keys(categories).includes(cid)) {
        throw new InvalidParameterError('此分类不存在');
    }

    const url = `${baseUrl}/albums${cid ? `-index-cate-${cid}` : ''}${tag ? `-index-tag-${tag}` : ''}.html`;
    const { data } = await got(url);
    const $ = load(data);

    const list = $('.gallary_item')
        .toArray()
        .map((item): DataItem & { link: string; aid: string } => {
            const $item = $(item);
            const href = $item.find('a').attr('href');
            const aid = href!.match(/^\/photos-index-aid-(\d+)\.html$/)![1];
            return {
                title: $item.find('a').attr('title')!,
                link: `${baseUrl}${href}`,
                pubDate: parseDate(
                    $item
                        .find('.info_col')

View on GitHub (pinned to bed535e087)

Solutions

Use one of the documented valid cid values listed in the categories object (1,2,3,5,6,7,9,10,12,13,14,16,17,18,19,20,21,22).
Omit cid entirely to get the default/all albums listing.
If a category was newly added on wnacg.com, add it to the `categories` map in common.tsx.

Defensive patterns

Strategy: validation

Validate before calling

const validCids = ['1', '2', '3', '5', '6', '7', '9', '10', '12', '13', '14', '16', '17', '18', '19', '20', '21', '22'];
if (cid && !validCids.includes(cid)) {
    throw new InvalidParameterError(`Invalid category id. Valid: ${validCids.join(', ')}`);
}

Type guard

const isValidWnacgCid = (cid: string): boolean =>
    ['1', '2', '3', '5', '6', '7', '9', '10', '12', '13', '14', '16', '17', '18', '19', '20', '21', '22'].includes(cid);

Prevention

Note the gaps in category ids (4, 8, 11, 15 are not valid).
Omit cid to get the default listing.
If wnacg.com adds new categories, update the categories map in common.tsx.

When it happens

Trigger: Passing `cid=4`, `cid=8`, `cid=11`, or `cid=15` (the gap numbers); passing any number outside 1–22; passing a non-numeric cid; URL path encoding issues.

Common situations: User tries sequential category numbers and hits a gap; user guesses a category id; site renumbered categories but the route's hardcoded map wasn't updated.

Related errors

AI-assisted analysis of DIYgod/RSSHub@bed535e087 (2026-08-12). Data as JSON: /api/errors/c910be57f9485abc. Report an issue: GitHub.