gatsbyjs/gatsby · error · Error

No response or non 200 code for ${url}

Error message

No response or non 200 code for ${url}

What it means

check-deps-changes GETs the package.json of the installed dependency version from unpkg.com to compare against the local one; a missing response or non-200 status code throws here. The URL is constructed from packageName@version, so an unpublished/removed version or network failure triggers it.

Source

Thrown at packages/gatsby-dev-cli/src/utils/check-deps-changes.js:67

      )
      return {
        didDepsChanged: false,
        packageNotInstalled,
      }
    }

    // if package is not installed, we will do http GET request to
    // unkpg to check if dependency in package published in public
    // npm repository are different

    // this allow us to not publish to local repository
    // and save some time/work
    try {
      const version = getPackageVersion(packageName)
      const url = `https://unpkg.com/${packageName}@${version}/package.json`
      const response = await got(url)
      if (response?.statusCode !== 200) {
        throw new Error(`No response or non 200 code for ${url}`)
      }
      localPKGjson = JSON.parse(response.body)
    } catch (e) {
      console.log(
        `'${packageName}' doesn't seem to be installed and is not published on NPM. Error: ${e.message}`
      )
      return {
        didDepsChanged: true,
        packageNotInstalled,
      }
    }
  }

  const monoRepoPackageJsonPath = getMonorepoPackageJsonPath({
    packageName,
    packageNameToPath,
  })
  const monorepoPKGjsonString = fs.readFileSync(

View on GitHub (pinned to e85d62f177)

Solutions

1. Check the package version exists on npm/unpkg (not unpublished)
2. Retry when the network or unpkg is temporarily unavailable
3. Ensure the local package.json version string is valid

When it happens

Trigger: Thrown at packages/gatsby-dev-cli/src/utils/check-deps-changes.js:67 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of gatsbyjs/gatsby@e85d62f177 (2026-08-26). Data as JSON: /api/errors/1d878ab7bca34276. Report an issue: GitHub.