louislam/uptime-kuma · error · Error

Invalid array

Error message

Invalid array

What it means

Thrown by StatusPage.updateDomainNameList(domainNameList) when the argument is not an array. The method deletes all existing CNAME mappings and re-inserts the provided list inside a transaction, so a non-array input would corrupt the iteration.

Source

Thrown at server/model/status_page.js:386

        let list = await R.findAll("status_page", " ORDER BY title ");

        for (let item of list) {
            result[item.id] = await item.toJSON();
        }

        io.to(socket.userID).emit("statusPageList", result);
        return list;
    }

    /**
     * Update list of domain names
     * @param {string[]} domainNameList List of status page domains
     * @returns {Promise<void>}
     */
    async updateDomainNameList(domainNameList) {
        if (!Array.isArray(domainNameList)) {
            throw new Error("Invalid array");
        }

        let trx = await R.begin();

        await trx.exec("DELETE FROM status_page_cname WHERE status_page_id = ?", [this.id]);

        try {
            for (let domain of domainNameList) {
                if (typeof domain !== "string") {
                    throw new Error("Invalid domain");
                }

                if (domain.trim() === "") {
                    continue;
                }

                // If the domain name is used in another status page, delete it
                await trx.exec("DELETE FROM status_page_cname WHERE domain = ?", [domain]);

View on GitHub (pinned to 6b5ea01557)

Solutions

1. Pass an array of strings, e.g. ["status.example.com"].
2. If you have a single domain, wrap it: Array.isArray(x) ? x : [x].
3. For an empty list, pass [] to clear all domains.

Example fix

// before
await statusPage.updateDomainNameList("status.example.com");
// after
await statusPage.updateDomainNameList(["status.example.com"]);

function ensureDomainArray(list) {
  if (!Array.isArray(list)) throw new Error("domainNameList must be an array");
  return list;
}

function isDomainNameList(list) {
  return Array.isArray(list);
}

try {
  await statusPage.updateDomainNameList(list);
} catch (e) {
  if (/Invalid array/.test(e.message)) return badRequest("domains must be an array");
  throw e;
}

When it happens

Trigger: Call updateDomainNameList with a string ("example.com"), an object ({domain: "x"}), null, or undefined. The guard fires before the transaction body iterates.

Common situations: API client sends a single domain string instead of a one-element array. JSON payload where the field was serialized as an object keyed by domain. Status-page import script that forgets to wrap the value in []

Related errors

• Invalid domain
• Slug must be string
• Slug cannot be empty
• Invalid Slug
• Service Name is required.

AI-assisted analysis of louislam/uptime-kuma@6b5ea01557 (2026-08-12). Data as JSON: /api/errors/84d16683a12abbc4. Report an issue: GitHub.