Handle config was not read due some issue and display what was the error instead of generic deserialization error

[LeszekKalibrate]

In file, line https://github.com/kubernetes-client/csharp/blob/master/src/KubernetesClient/KubernetesClientConfiguration.ConfigFile.cs#L572 There is no check that the output was successful, so when it fails we get just a dump deserialization error.

Can a simple check like string.IsNulOrEmpty be added and then if yes , throw an exception, but with the text from error output?

Sometimes I get randomly that error, and today it was due to personal access token expired, but deserialization error for an empty string does not give any hint. Thank you.

Using: var kubernetesClientConfig = KubernetesClientConfiguration.BuildDefaultConfig(); to read from kube/.config file.