Unable to set Azure Enviroment Var without Error

[Keithsc]

Acme proxy fails if the Azure Environment variable "AZURE_ENVIRONMENT" is set to anything. The following error happens.

FATAL Unable to setup a valid DNS provider: autorest/azure: There is no cloud environment matching the name "PUBLIC"

These are the variables I am attempting to set.

AZURE_CLIENT_ID | Client ID
AZURE_CLIENT_SECRET | Client secret
AZURE_ENVIRONMENT | Azure environment, one of: public, usgovernment, german, and china
AZURE_RESOURCE_GROUP | Resource group
AZURE_SUBSCRIPTION_ID | Subscription ID
AZURE_TENANT_ID | Tenant ID