prisma throws exception right on running in debug mode

i am running a nest project in debug mode inside visual studio code

on run it throws this exception

Exception has occurred: TypeError: Cannot read properties of undefined (reading 'getConfig')at Object.getConfig

at the same time, the solution along with prisma runs normally without debug mode

here is my launch.json file

{

    "version": "0.2.0",
    "configurations": [
    
        {
            "type": "node",
            "request": "launch",
            "name": "Debug Nest Framework",
            "args": ["${workspaceFolder}/src/main.ts"],
            "runtimeArgs": ["--nolazy", "-r", "ts-node/register"],
            "sourceMaps": true,
            "cwd": "${workspaceRoot}",
            "protocol": "inspector"
        }
    ]
}

this is the root AppModule

/*imports...*/
@Module({
  imports: [ControllersModule, ConfigModule.forRoot({
    isGlobal: true,
    envFilePath: `.env`
    // ignoreEnvFile: process.env.ENV !== `DEV`,
  }), AuthModule, UsersModule, ScheduleModule.forRoot()
  
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule { }

prisma.service.ts code :

import { Injectable, OnModuleInit, OnModuleDestroy } from '@nestjs/common'
import { PrismaClient } from '@prisma/client'

@Injectable()
export class PrismaService
  extends PrismaClient
  implements OnModuleInit, OnModuleDestroy
{
  async onModuleInit() {
    await this.$connect()
  }

  async onModuleDestroy() {
    await this.$disconnect()
  }
}