Fix django.db.utils.operationalerror: fe_sendauth: no password supplied

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In settings.py check DATABASES configuration:

If your local passwordless Postgres database had access configured via Unix-socket, just remove HOST, PORT, PASSWORD in database:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'your_db_name',
        'USER': 'postgres',
       # 'PASSWORD': 'Password for postgres user',
       # 'HOST': 'localhost',
       # 'PORT': '5432',
    }
}

If your Postgres bound to host and there is no password required for the user, remove PASSWORD:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'your_db_name',
        'USER': 'postgres',
        #  'PASSWORD': 'Password for postgres user',
        'HOST': 'localhost',
        'PORT': '5432',
    }
}

If you have a user with a password – define it:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'your_db_name',
        'USER': 'postgres',
        'PASSWORD': 'Password for postgres user',
        'HOST': 'localhost',
        'PORT': '5432',
    }
}

This is it. Please answer in the comments whether it works for you.

django.db.utils.operationalerror: fe_sendauth fix