namespace Microsoft.AspNetCore.Hosting
{
    /// <summary>
    /// Provides information about the web hosting environment an application is running in.
    /// </summary>
    public interface IHostingEnvironment
    {
        /// <summary>
        /// Gets or sets the name of the environment. The host automatically sets this property to the value
        /// of the "ASPNETCORE_ENVIRONMENT" environment variable, or "environment" as specified in any other configuration source.
        /// </summary>
        string EnvironmentName { get; set; }

namespace Microsoft.Extensions.Hosting
{
    /// <summary>
    /// Provides information about the hosting environment an application is running in.
    /// </summary>
    public interface IHostEnvironment
    {
        /// <summary>
        /// Gets or sets the name of the environment. The host automatically sets this property to the value of the
        /// of the "environment" key as specified in configuration.
        /// </summary>
        string EnvironmentName { get; set; }

Method not found: 'Microsoft.AspNetCore.Hosting.IHostingEnvironment Microsoft.AspNetCore.Hosting.Web
HostBuilderContext.get_HostingEnvironment()'."