fix 'secrets.json' was not found

aspnet-core/src/AbpCompanyName.AbpProjectName.Core/Configuration/AppConfigurations.cs

@@ -38,7 +38,7 @@ namespace AbpCompanyName.AbpProjectName.Configuration
 
             if (addUserSecrets)
             {
-                builder.AddUserSecrets(typeof(AppConfigurations).GetAssembly());
+                builder.AddUserSecrets(typeof(AppConfigurations).GetAssembly(), optional: true);
             }
 
             return builder.Build();