Reason: socket hang up

[KarlsDad]

1. i start the server
   npm run api
   also fine...

2. i start the app, i get a error
   npm start

Error: request to http://localhost:4001/api/categories? failed, reason: socket hang up

// https://schema.io schemaIO: { clientId: 'XXX', // from https://XXX.schema.io/system/account -> API Keys clientSecret: 'pk_0XfuNSITPyzXXXXXXXXXXXXXXXXXXXX', // from https://XXX.schema.io/system/account -> Secret Key protocol: 'https://', host: 'api.schema.io' },

whats make wrong?