Also, I don’t know if this could be linked to the issue you encounter, but I don’t have exactly the same PrismaService class implementation. Here’s mine if it could help:

/* eslint-disable @typescript-eslint/no-explicit-any */
import { Injectable, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
import { PrismaClient } from '@prisma/client';


@Injectable()
export class PrismaService extends PrismaClient
  implements OnModuleInit, OnModuleDestroy {
  async onModuleInit(): Promise<any> {
    return await this.$connect();
  }

  async onModuleDestroy(): Promise<any> {
    return await this.$disconnect();
  }
}

I use Prisma 2.27.0