yarn start error when using with backend url

yarn start --backend http://localhost/openmrs/
[openmrs] Loading dynamic import map ...
[openmrs] Looking in directory "D:\open-source\O3\openmrs-esm-patient-management" ...
[openmrs] No "webpack.config.json" found in directory "D:\open-source\O3\openmrs-esm-patient-management". Trying to use default config ...
cli.js develop

Starts a new frontend module development session with the OpenMRS app shell.

Options:
  --version              Show version number                           [boolean]
  --help                 Show help                                     [boolean]
  --port                 The port where the dev server should run.
                                                        [number] [default: 8080]
  --host                 The host name or IP for the server to use.
                                                 [number] [default: "localhost"]
  --backend              The backend to proxy API requests to.
                                 [string] [default: "https://dev3.openmrs.org/"]
  --add-cookie           Additional cookies to provide when proxying.
                                                          [string] [default: ""]
  --spa-path             The path of the application on the target server.
                                             [string] [default: "/openmrs/spa/"]
  --api-url              The URL of the API. Can be a path if the API is on the
                         same target server.     [string] [default: "/openmrs/"]
  --open                 Immediately opens the SPA page URL in the browser.
                                                       [boolean] [default: true]
  --config-url           The URL to a valid frontend configuration. Can be used
                         multiple times.                   [array] [default: []]
  --sources              Runs the projects from the provided source directories.
                         Can be used multiple times.    [array] [default: ["."]]
  --shared-dependencies  The additional shared dependencies besides the ones
                         from the app shell.               [array] [default: []]
  --importmap            The import map to use. Can be a path to a valid import
                         map to be taken literally, an URL, or a fixed JSON
                         object.            [string] [default: "importmap.json"]

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
    at validateString (internal/validators.js:124:11)
    at basename (path.js:743:5)
    at getMainBundle (D:\open-source\O3\openmrs-esm-patient-management\node_modules\openmrs\dist\utils\dependencies.js:13:35)
    at runProjectWebpack (D:\open-source\O3\openmrs-esm-patient-management\node_modules\openmrs\dist\utils\importmap.js:93:53)
    at D:\open-source\O3\openmrs-esm-patient-management\node_modules\openmrs\dist\utils\importmap.js:131:17
    at Generator.next (<anonymous>)
    at fulfilled (D:\open-source\O3\openmrs-esm-patient-management\node_modules\openmrs\dist\utils\importmap.js:5:58) {
  code: 'ERR_INVALID_ARG_TYPE'
}