The relation field on model is missing an opposite relation field on the model

generator client {
    provider = "prisma-client-js"
}

datasource db {
    provider = "mysql"
    url      = env("DATABASE_URL")
}

enum Sex {
    suspected_male
    suspected_female
    male
    female
    intersex
    unknown
}

model Animal {
    id                      Int     @id @default(autoincrement())
    species                 String  @db.VarChar(255)
    spcies_scientific_name  String  @db.VarChar(255)
    age                     String  @db.VarChar(255)
    dob                     DateTime?
    sex                     Sex

    mother                  Animal? @relation(name: "Mother", fields: [motherId], references: [id])
    motherId                Int? // relation scalar field  (used in the `@relation` attribute above)

    father                  Animal? @relation(name: "Father", fields: [fatherId], references: [id])
    fatherId                Int? // relation scalar field  (used in the `@relation` attribute above)
}

The relation field `mother` on model `Animal` is missing an opposite relation field on the model `Animal`.
The relation field `father` on model `Animal` is missing an opposite relation field on the model `Animal`.