Wrong error message when Storefront could not connect to Virto Commerce Platform

[Maksim Kopnov]

Version info:

• Browser version: Chrome 77.0.3865.120
• Platform version:
• Storefront version: v4.1.1

Expected behavior

Get a message like

Failed to connect to Virto Commerce Platform. Check if the endpoint URL is set correctly in appsettings.json

Actual behavior

Get error message

HttpOperationException: Operation returned an invalid status code 'Unauthorized'
VirtoCommerce.Storefront.AutoRestClients.StoreModuleApi.StoreModule.GetStoresWithHttpMessagesAsync(Dictionary<string, List> customHeaders, CancellationToken cancellationToken) in StoreModuleApi.cs, line 663

Steps to reproduce

1. In storefront appsettings.json set wrong Endpoint:URL

"Endpoint": {
        "Url": "https://l",

2. Start storefront web app