No need to depends on the AbpAspNetCoreMvcUiBootstrapModule since AbpAspNetCoreMvcUiThemeSharedModule already depends on it!

modules/identity/src/Volo.Abp.Identity.Web/AbpIdentityWebModule.cs

@@ -1,7 +1,6 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AspNetCore.Mvc.Localization;
-using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap;
 using Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared;
 using Volo.Abp.AutoMapper;
 using Volo.Abp.Identity.Localization;
@@ -16,7 +15,6 @@ using Volo.Abp.VirtualFileSystem;
 namespace Volo.Abp.Identity.Web
 {
     [DependsOn(typeof(AbpIdentityHttpApiModule))]
-    [DependsOn(typeof(AbpAspNetCoreMvcUiBootstrapModule))]
     [DependsOn(typeof(AbpAutoMapperModule))]
     [DependsOn(typeof(AbpPermissionManagementWebModule))]
     [DependsOn(typeof(AbpAspNetCoreMvcUiThemeSharedModule))]

modules/identity/src/Volo.Abp.Identity.Web/Volo.Abp.Identity.Web.csproj

@@ -38,7 +38,6 @@
 
     <ProjectReference Include="..\..\..\permission-management\src\Volo.Abp.PermissionManagement.Web\Volo.Abp.PermissionManagement.Web.csproj" />
 
-    <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.AspNetCore.Mvc.UI.Bootstrap\Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.csproj" />
     <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.AutoMapper\Volo.Abp.AutoMapper.csproj" />
     <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared\Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared.csproj" />
   </ItemGroup>