Check if environment is available.

framework/src/Volo.Abp.AspNetCore/Volo/Abp/ApplicationInitializationContextExtensions.cs

@@ -1,4 +1,5 @@
-using Microsoft.AspNetCore.Builder;
+using JetBrains.Annotations;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -19,6 +20,12 @@ namespace Volo.Abp
             return context.ServiceProvider.GetRequiredService<IWebHostEnvironment>();
         }
 
+        [CanBeNull]
+        public static IWebHostEnvironment GetEnvironmentOrNull(this ApplicationInitializationContext context)
+        {
+            return context.ServiceProvider.GetService<IWebHostEnvironment>();
+        }
+
         public static IConfiguration GetConfiguration(this ApplicationInitializationContext context)
         {
             return context.ServiceProvider.GetRequiredService<IConfiguration>();

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/AbpAspNetCoreModule.cs

@@ -55,11 +55,15 @@ namespace Volo.Abp.AspNetCore
 
         public override void OnApplicationInitialization(ApplicationInitializationContext context)
         {
-            context.GetEnvironment().WebRootFileProvider =
+            var environment = context.GetEnvironmentOrNull();
-                new CompositeFileProvider(
+            if (environment != null)
-                    context.GetEnvironment().WebRootFileProvider,
+            {
-                    context.ServiceProvider.GetRequiredService<IWebContentFileProvider>()
+                environment.WebRootFileProvider =
-                );
+                    new CompositeFileProvider(
+                        context.GetEnvironment().WebRootFileProvider,
+                        context.ServiceProvider.GetRequiredService<IWebContentFileProvider>()
+                    );
+            }
         }
     }
 }