doccano/frontend/i18n/en/projects/errors.js

export default {
  fileCannotUpload: 'The file(s) could not be uploaded. Maybe invalid format.\n Please check available formats and the following file(s): ',
  labelCannotCreate: 'The label could not be created.\n You cannot use the same label name or shortcut key.',
  invalidUserOrPass: 'Incorrect username or password, or something went wrong.'
}