PostgreSQL - supprimer une ligne qui est créé par django utilisant PHPPgAdmin ? -Débordement de pile

Using django, I added a new entry to my table. Now I want to delete it using PHPPgAdmin (postgresql), but I get No unique Identifier for this row error. What is the problem?

django automatically adds an auto-incrementing primary key, so I cannot figure out what the issue is?

I read this post, but it did not help. If you notice the image carefully, you will see that the primary key column label is id but not pk as it should be in django.

EDIT: No primary key is seen on table;

But this is what django executes;

python manage.py sql auth

CREATE TABLE "auth_user" (
    "id" serial NOT NULL PRIMARY KEY,
    "password" varchar(128) NOT NULL,
    "last_login" timestamp with time zone NOT NULL,
    "is_superuser" boolean NOT NULL,
    "username" varchar(30) NOT NULL UNIQUE,
    "first_name" varchar(30) NOT NULL,
    "last_name" varchar(30) NOT NULL,
    "email" varchar(75) NOT NULL,
    "is_staff" boolean NOT NULL,
    "is_active" boolean NOT NULL,
    "date_joined" timestamp with time zone NOT NULL
)
;

EDIT: A screenshot from PHPPgAdmin, showing id as primary key

Using django, I added a new entry to my table. Now I want to delete it using PHPPgAdmin (postgresql), but I get No unique Identifier for this row error. What is the problem?

django automatically adds an auto-incrementing primary key, so I cannot figure out what the issue is?

I read this post, but it did not help. If you notice the image carefully, you will see that the primary key column label is id but not pk as it should be in django.

EDIT: No primary key is seen on table;

But this is what django executes;

python manage.py sql auth

CREATE TABLE "auth_user" (
    "id" serial NOT NULL PRIMARY KEY,
    "password" varchar(128) NOT NULL,
    "last_login" timestamp with time zone NOT NULL,
    "is_superuser" boolean NOT NULL,
    "username" varchar(30) NOT NULL UNIQUE,
    "first_name" varchar(30) NOT NULL,
    "last_name" varchar(30) NOT NULL,
    "email" varchar(75) NOT NULL,
    "is_staff" boolean NOT NULL,
    "is_active" boolean NOT NULL,
    "date_joined" timestamp with time zone NOT NULL
)
;

EDIT: A screenshot from PHPPgAdmin, showing id as primary key

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