I am using Minitest and Postgres to test my Rails website. When I added a “Like” model, I started getting Postgresql deadlock errors

Minitest::UnexpectedError: ActiveRecord::Deadlocked: PG::TRDeadlockDetected: ERROR:  deadlock detected LINE 7: DELETE FROM "videos";                     ^ DETAIL:  Process 11456 waits for RowExclusiveLock on relation 42608 of database 42434; blocked by process 10460. Process 10460 waits for ShareRowExclusiveLock on relation 42564 of database 42434; blocked by process 11456. HINT:  See server log for query details. 

Other errors:

Minitest::UnexpectedError: ActiveRecord::RecordNotUnique: PG::UniqueViolation: ERROR:  duplicate key value violates unique constraint "accounts_pkey"
DETAIL:  Key (id)=(825136781) already exists.

Minitest::UnexpectedError: ActiveRecord::ConnectionNotEstablished: connection is closed

My models:

class Like < ApplicationRecord
  belongs_to :profile
  belongs_to :video
end

class Video < ApplicationRecord
  belongs_to :profile
  has_one_attached :source

  has_and_belongs_to_many :likes_profiles, class_name: 'Profile', join_table: 'likes'

#Some validations...
end

class Profile < ApplicationRecord
  belongs_to :account

  has_many :followers_follow, foreign_key: :followee_id, class_name: 'Follow', dependent: :destroy
  has_many :followers, through: :followers_follow, source: :follower, dependent: :destroy
  has_many :followees_follow, foreign_key: :follower_id, class_name: 'Follow', dependent: :destroy
  has_many :followees, through: :followees_follow, source: :followee, dependent: :destroy
  has_many :videos, dependent: :destroy

  has_and_belongs_to_many :liked_videos, class_name: 'Video', join_table: 'likes'

  has_one_attached :avatar
# Some validations...
end

Like model tests:

require "test_helper"

class LikeTest < ActiveSupport::TestCase
  def setup
    @profile1 = profiles(:basic1)
    @profile2 = profiles(:basic2)
    @video1 = videos(:one)
  end

  test 'profile should be able to like video' do
    f = Like.new(profile_id: @profile2.id, video_id: @video1.id)
    assert f.save
    assert @profile2.liked_videos.include?(@video1)
    assert @video1.likes_profiles.include?(@profile2)
  end

  test 'should not like second time' do
    f = Like.new(profile_id: @profile1.id, video_id: @video1.id)
    assert_not f.save
  end
end

Everything was good until I added Like model