Azure portal is broken.

I cannot access my resources on portal. All of them are showing something like:

This resource is unavailable, please try again later. /subscriptions/xxx/resourceGroups/xxx/providers/Microsoft.Network/virtualNetworks/xxx

Or:

This resource is unavailable, please try again later. /subscriptions/xxx/resourceGroups/xxx/providers/Microsoft.Compute/virtualMachines/xxx

I can access to the VM by ssh, and every network services on it work well.

So I think the broken one is Azure Portal.

# update

Rest api's trace:

{
    "responses": [{
        "httpStatusCode": 500,
        "content": {
            "error": {
                "code": "InternalServerError",
                "message": "Encountered internal server error for batch API request 'https://management.azure.com/subscriptions/xxx/resourcegroups/xxx/providers/Microsoft.Compute/virtualMachines/xxx?api-version=2017-12-01&$expand=instanceView'. Tracking id '91fb0225-1f5b-4a61-bdbe-dda9eb644c26'."
            }
        },
        "contentLength": 367
    }]
}