overleaf/overleaf · error · FeatureNotAvailableError

This feature is not enabled on your account

Error message

This feature is not enabled on your account

What it means

Branch of LinkedFilesController.handleError mapping FeatureNotAvailableError to 400: the linked-file provider/feature being used is not enabled for this user's account (e.g. feature-gated integration such as Zotero/Mendeley on unsupported plans).

Source

Thrown at services/web/app/src/Features/LinkedFiles/LinkedFilesController.mjs:248

          `Your URL could not be reached (${
            error.info?.status || error.cause?.info?.status
          } status code). Please check it and try again.`
        )
      }
    } else if (error instanceof InvalidUrlError) {
      res.status(422)
      plainTextResponse(
        res,
        'Your URL is not valid. Please check it and try again.'
      )
    } else if (error instanceof NotOriginalImporterError) {
      res.status(400)
      plainTextResponse(
        res,
        'You are not the user who originally imported this file'
      )
    } else if (error instanceof FeatureNotAvailableError) {
      res.status(400)
      plainTextResponse(res, 'This feature is not enabled on your account')
    } else if (error instanceof RemoteServiceError) {
      if (error.info?.statusCode === 403) {
        res.status(400).json({ relink: true })
      } else {
        res.status(502)
        plainTextResponse(res, 'The remote service produced an error')
      }
    } else if (error instanceof FileCannotRefreshError) {
      res.status(400)
      plainTextResponse(res, 'This file cannot be refreshed')
    } else if (error.message === 'project_has_too_many_files') {
      res.status(400)
      plainTextResponse(res, 'too many files')
    } else if (/\bECONNREFUSED\b/.test(error.message)) {
      res.status(500)
      plainTextResponse(res, 'Importing references is not currently available')
    } else if (error instanceof FileTooLargeError) {

View on GitHub (pinned to 28ad3b03b7)

Solutions

1. Enable the feature on the account or upgrade the plan
2. Use a supported linked-file provider

When it happens

Trigger: Thrown at services/web/app/src/Features/LinkedFiles/LinkedFilesController.mjs:248 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of overleaf/overleaf@28ad3b03b7 (2026-09-03). Data as JSON: /api/errors/b8050a03122d1035. Report an issue: GitHub.