Failure/Error: require 'rspec/rails' TypeError: wrong argument type Class (expected Module) Rspec V3

I understand that, this error is common but somehow I am not able to figure out the problem, seems like its path related. I followed this question also but no luck so far.

Gemfile

group :development, :test do
  gem 'faker'
  gem 'rspec-rails', '~> 3.7'
  gem 'factory_bot_rails', '~> 4.0'
  gem 'shoulda-matchers', '~> 3.1'    
end

spec/factories/user.rb

FactoryBot.define do
  factory :user do
    name "Andy"
  end
end

spec/models/user_spec.rb

require 'rails_helper'

RSpec.describe User, type: :model do

it "should be invalid without phone number" do
    user = build(:user)
    user.phone = nil
    expect(user).not_to be_valid
  end
end

spec/support/factory_bot.rb

RSpec.configure do |config|
  config.include FactoryBot::Syntax::Methods
end

.rspec

--require spec_helper
--color

rails_helper.rb

require 'spec_helper'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'rspec/rails'
require 'support/factory_bot'
...
...

I am running bundle exec rspec spec/models/user_spec.rb

Things I tried:

1. Added require 'support/factory_bot' in rails_helper.rb below require 'rspec/rails' line.
2. rails generate rspec:install (executed successfully)
3. rspec --init (executed successfully)
4. rake db:test:prepare (executed successfully)
5. Changed require 'rails_helper' to require 'spec_helper' in user_spec.rb but got error NameError: uninitialized constant User after run.

Here is the full trace:

An error occurred while loading ./spec/models/user_spec.rb.
Failure/Error: require 'rspec/rails'
TypeError:
  wrong argument type Class (expected Module)
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:181:in `include'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:181:in `block in add_template_helper'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:181:in `module_eval'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:181:in `add_template_helper'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:110:in `block in helper'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:109:in `each'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/abstract_controller/helpers.rb:109:in `helper'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionpack-5.0.6/lib/action_controller/railties/helpers.rb:17:in `inherited'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionview-5.0.6/lib/action_view/test_case.rb:11:in `<class:TestCase>'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionview-5.0.6/lib/action_view/test_case.rb:10:in `<module:ActionView>'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/actionview-5.0.6/lib/action_view/test_case.rb:8:in `<top (required)>'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `block in require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:259:in `load_dependency'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `block in require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:259:in `load_dependency'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `block in require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:259:in `load_dependency'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `block in require'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:259:in `load_dependency'
# /Users/Imi/.rvm/gems/ruby-2.4.0/gems/activesupport-5.0.6/lib/active_support/dependencies.rb:293:in `require'
# ./spec/rails_helper.rb:7:in `<top (required)>'
# ./spec/models/user_spec.rb:1:in `require'
# ./spec/models/user_spec.rb:1:in `<top (required)>'
No examples found.


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