How to switch from Lepton Theme To Basic Theme in ABP MVC Project

Install Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic package to your Web project and add typeof(AbpAspNetCoreMvcUiBasicThemeModule) in your DependsOn attribute parameters over your YourProjectNameWebModule class.

Then remove typeof(AbpAspNetCoreMvcUiLeptonThemeModule) from DependsOn attribute.

    [DependsOn(
        typeof(BookstoreHttpApiModule),
        typeof(BookstoreApplicationModule),
        typeof(BookstoreEntityFrameworkCoreModule),
        typeof(AbpAutofacModule),
        typeof(AbpIdentityWebModule),
        typeof(AbpAccountPublicWebIdentityServerModule),
        typeof(AbpAuditLoggingWebModule),
        //typeof(LeptonThemeManagementWebModule), // <-- Remove this 
        typeof(SaasHostWebModule),
        typeof(AbpAccountAdminWebModule),
        typeof(AbpIdentityServerWebModule),
        typeof(LanguageManagementWebModule),
        //typeof(AbpAspNetCoreMvcUiLeptonThemeModule), // and remove this
        typeof(TextTemplateManagementWebModule),
        typeof(AbpSwashbuckleModule),
        typeof(AbpAspNetCoreSerilogModule),
        typeof(AbpAspNetCoreMvcUiBasicThemeModule) // <-- Add This line
        )]
    public class BookstoreWebModule : AbpModule
    { 
        // ...

Then add following library to your package.json

"@abp/aspnetcore.mvc.ui.theme.basic": "^4.4.0"

And execute the following cli command to install client-libraries:

abp install-libs

You're ready to run now