update app module

src/app.module.ts

@@ -1,6 +1,7 @@
 import { Module } from '@nestjs/common';
 import { GraphQLModule } from '@nestjs/graphql';
 import { ApolloDriver, ApolloDriverConfig } from '@nestjs/apollo';
+import { ApolloServerPluginLandingPageLocalDefault } from '@apollo/server/plugin/landingPage/default';
 
 import { PrismaModule } from './prisma/prisma.module.js';
 import { ProfileModule } from './profile/profile.module.js';
@@ -10,6 +11,12 @@ import { ProfileModule } from './profile/profile.module.js';
     GraphQLModule.forRoot<ApolloDriverConfig>({
       driver: ApolloDriver,
       autoSchemaFile: true,
+      introspection: true,
+      plugins: [
+        ApolloServerPluginLandingPageLocalDefault({
+          embed: true,
+        }),
+      ],
     }),
 
     PrismaModule,