'couldn't find file 'owl.theme.default' with type 'text/css' error in rails 5.1.4

im getting the below error.

Sprockets::FileNotFound at /
couldn't find file 'owl.theme.default' with type 'text/css'
Checked in these paths: 
  /home/xyz/abc/proj1/app/assets/config
  /home/xyz/abc/proj1/app/assets/fonts
  /home/xyz/abc/proj1/app/assets/images

below are my proj1 Gemfile and Gemfile.lock files

source 'https://rubygems.org'

#ruby '3.0.4'
ruby '2.6.0'
gem 'rails', '~> 5.1.4'
#gem 'rails', '~> 6.1', '>= 6.1.5'
gem 'puma'
gem 'pg'

gem 'devise'#, :github => 'plataformatec/devise', :branch => 'master'
gem 'omniauth'
gem 'omniauth-facebook'
gem 'omniauth-google-oauth2'

gem 'sass-rails'#, '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.2'
gem 'therubyracer', platforms: :ruby
gem 'jquery-rails'
gem 'jquery-ui-rails'
gem 'turbolinks', '~> 5'
gem 'jquery-turbolinks'
gem 'jbuilder'#, '~> 2.5'
gem 'will_paginate'
gem 'will_paginate-bootstrap'
gem 'redis', '~> 3.0'
gem 'bootstrap-sass'
gem 'font-awesome-sass', '~> 4.4.0'
gem 'figaro'
gem "paperclip"#, "~> 4.3"

gem 'angularjs-rails'
gem 'angular-rails-templates'
gem 'angular-ui-bootstrap-rails'
gem 'aws-sdk', '< 2.0'

gem 'wicked_pdf'
gem 'wkhtmltopdf-binary'

group :development do
  gem 'pry'
  gem 'spring'
  gem 'better_errors'
  gem "binding_of_caller"
end

group :development, :test do
  gem 'rubocop'
  gem 'byebug'
end

group :production do
  gem 'rails_12factor'
end

*** Gemfile.lock ***

GEM
  remote: https://rubygems.org/
  specs:
    actioncable (5.1.7)
      actionpack (= 5.1.7)
      nio4r (~> 2.0)
      websocket-driver (~> 0.6.1)
    actionmailer (5.1.7)
      actionpack (= 5.1.7)
      actionview (= 5.1.7)
      activejob (= 5.1.7)
      mail (~> 2.5, >= 2.5.4)
      rails-dom-testing (~> 2.0)
    actionpack (5.1.7)
      actionview (= 5.1.7)
      activesupport (= 5.1.7)
      rack (~> 2.0)
      rack-test (>= 0.6.3)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.0, >= 1.0.2)
    actionview (5.1.7)
      activesupport (= 5.1.7)
      builder (~> 3.1)
      erubi (~> 1.4)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.0, >= 1.0.3)
    activejob (5.1.7)
      activesupport (= 5.1.7)
      globalid (>= 0.3.6)
    activemodel (5.1.7)
      activesupport (= 5.1.7)
    activerecord (5.1.7)
      activemodel (= 5.1.7)
      activesupport (= 5.1.7)
      arel (~> 8.0)
    activesupport (5.1.7)
      concurrent-ruby (~> 1.0, >= 1.0.2)
      i18n (>= 0.7, < 2)
      minitest (~> 5.1)
      tzinfo (~> 1.1)
    angular-rails-templates (1.1.0)
      railties (>= 4.2, < 7)
      sprockets (>= 3.0, < 5)
      tilt
    angular-ui-bootstrap-rails (2.4.0)
    angularjs-rails (1.8.0)
    arel (8.0.0)
    ast (2.4.2)
    autoprefixer-rails (10.4.7.0)
      execjs (~> 2)
    aws-sdk (1.67.0)
      aws-sdk-v1 (= 1.67.0)
    aws-sdk-v1 (1.67.0)
      json (~> 1.4)
      nokogiri (~> 1)
    bcrypt (3.1.17)
    better_errors (2.9.1)
      coderay (>= 1.0.0)
      erubi (>= 1.0.0)
      rack (>= 0.9.0)
    binding_of_caller (1.0.0)
      debug_inspector (>= 0.0.1)
    bootstrap-sass (3.4.1)
      autoprefixer-rails (>= 5.2.1)
      sassc (>= 2.0.0)
    builder (3.2.4)
    byebug (11.1.3)
    climate_control (0.2.0)
    coderay (1.1.3)
    coffee-rails (4.2.2)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0)
    coffee-script (2.4.1)
      coffee-script-source
      execjs
    coffee-script-source (1.12.2)
    concurrent-ruby (1.1.10)
    crass (1.0.6)
    debug_inspector (1.1.0)
    devise (4.8.1)
      bcrypt (~> 3.0)
      orm_adapter (~> 0.1)
      railties (>= 4.1.0)
      responders
      warden (~> 1.2.3)
    erubi (1.10.0)
    execjs (2.8.1)
    faraday (2.2.0)
      faraday-net_http (~> 2.0)
      ruby2_keywords (>= 0.0.4)
    faraday-net_http (2.0.2)
    ffi (1.15.5)
    figaro (1.2.0)
      thor (>= 0.14.0, < 2)
    font-awesome-sass (4.4.0)
      sass (>= 3.2)
    globalid (1.0.0)
      activesupport (>= 5.0)
    hashie (5.0.0)
    i18n (1.10.0)
      concurrent-ruby (~> 1.0)
    jbuilder (2.11.5)
      actionview (>= 5.0.0)
      activesupport (>= 5.0.0)
    jquery-rails (4.4.0)
      rails-dom-testing (>= 1, < 3)
      railties (>= 4.2.0)
      thor (>= 0.14, < 2.0)
    jquery-turbolinks (2.1.0)
      railties (>= 3.1.0)
      turbolinks
    jquery-ui-rails (6.0.1)
      railties (>= 3.2.16)
    json (1.8.6)
    jwt (2.3.0)
    libv8 (3.16.14.19)
    loofah (2.17.0)
      crass (~> 1.0.2)
      nokogiri (>= 1.5.9)
    mail (2.7.1)
      mini_mime (>= 0.1.1)
    method_source (1.0.0)
    mime-types (3.4.1)
      mime-types-data (~> 3.2015)
    mime-types-data (3.2022.0105)
    mimemagic (0.3.10)
      nokogiri (~> 1)
      rake
    mini_mime (1.1.2)
    mini_portile2 (2.8.0)
    minitest (5.15.0)
    multi_json (1.15.0)
    multi_xml (0.6.0)
    nio4r (2.5.8)
    nokogiri (1.13.5)
      mini_portile2 (~> 2.8.0)
      racc (~> 1.4)
    oauth2 (1.4.9)
      faraday (>= 0.17.3, < 3.0)
      jwt (>= 1.0, < 3.0)
      multi_json (~> 1.3)
      multi_xml (~> 0.5)
      rack (>= 1.2, < 3)
    omniauth (2.1.0)
      hashie (>= 3.4.6)
      rack (>= 2.2.3)
      rack-protection
    omniauth-facebook (9.0.0)
      omniauth-oauth2 (~> 1.2)
    omniauth-google-oauth2 (1.0.1)
      jwt (>= 2.0)
      oauth2 (~> 1.1)
      omniauth (~> 2.0)
      omniauth-oauth2 (~> 1.7.1)
    omniauth-oauth2 (1.7.2)
      oauth2 (~> 1.4)
      omniauth (>= 1.9, < 3)
    orm_adapter (0.5.0)
    paperclip (6.1.0)
      activemodel (>= 4.2.0)
      activesupport (>= 4.2.0)
      mime-types
      mimemagic (~> 0.3.0)
      terrapin (~> 0.6.0)
    parallel (1.22.1)
    parser (3.1.2.0)
      ast (~> 2.4.1)
    pg (1.3.5)
    pry (0.14.1)
      coderay (~> 1.1)
      method_source (~> 1.0)
    puma (5.6.4)
      nio4r (~> 2.0)
    racc (1.6.0)
    rack (2.2.3)
    rack-protection (2.2.0)
      rack
    rack-test (1.1.0)
      rack (>= 1.0, < 3)
    rails (5.1.7)
      actioncable (= 5.1.7)
      actionmailer (= 5.1.7)
      actionpack (= 5.1.7)
      actionview (= 5.1.7)
      activejob (= 5.1.7)
      activemodel (= 5.1.7)
      activerecord (= 5.1.7)
      activesupport (= 5.1.7)
      bundler (>= 1.3.0)
      railties (= 5.1.7)
      sprockets-rails (>= 2.0.0)
    rails-dom-testing (2.0.3)
      activesupport (>= 4.2.0)
      nokogiri (>= 1.6)
    rails-html-sanitizer (1.4.2)
      loofah (~> 2.3)
    rails_12factor (0.0.3)
      rails_serve_static_assets
      rails_stdout_logging
    rails_serve_static_assets (0.0.5)
    rails_stdout_logging (0.0.5)
    railties (5.1.7)
      actionpack (= 5.1.7)
      activesupport (= 5.1.7)
      method_source
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rainbow (3.1.1)
    rake (13.0.6)
    rb-fsevent (0.11.1)
    rb-inotify (0.10.1)
      ffi (~> 1.0)
    redis (3.3.5)
    ref (2.0.0)
    regexp_parser (2.3.1)
    responders (3.0.1)
      actionpack (>= 5.0)
      railties (>= 5.0)
    rexml (3.2.5)
    rubocop (1.28.2)
      parallel (~> 1.10)
      parser (>= 3.1.0.0)
      rainbow (>= 2.2.2, < 4.0)
      regexp_parser (>= 1.8, < 3.0)
      rexml
      rubocop-ast (>= 1.17.0, < 2.0)
      ruby-progressbar (~> 1.7)
      unicode-display_width (>= 1.4.0, < 3.0)
    rubocop-ast (1.17.0)
      parser (>= 3.1.1.0)
    ruby-progressbar (1.11.0)
    ruby2_keywords (0.0.5)
    sass (3.7.4)
      sass-listen (~> 4.0.0)
    sass-listen (4.0.0)
      rb-fsevent (~> 0.9, >= 0.9.4)
      rb-inotify (~> 0.9, >= 0.9.7)
    sass-rails (6.0.0)
      sassc-rails (~> 2.1, >= 2.1.1)
    sassc (2.4.0)
      ffi (~> 1.9)
    sassc-rails (2.1.2)
      railties (>= 4.0.0)
      sassc (>= 2.0)
      sprockets (> 3.0)
      sprockets-rails
      tilt
    spring (3.1.1)
    sprockets (4.0.3)
      concurrent-ruby (~> 1.0)
      rack (> 1, < 3)
    sprockets-rails (3.2.2)
      actionpack (>= 4.0)
      activesupport (>= 4.0)
      sprockets (>= 3.0.0)
    terrapin (0.6.0)
      climate_control (>= 0.0.3, < 1.0)
    therubyracer (0.12.3)
      libv8 (~> 3.16.14.15)
      ref
    thor (1.2.1)
    thread_safe (0.3.6)
    tilt (2.0.10)
    turbolinks (5.2.1)
      turbolinks-source (~> 5.2)
    turbolinks-source (5.2.0)
    tzinfo (1.2.9)
      thread_safe (~> 0.1)
    uglifier (4.2.0)
      execjs (>= 0.3.0, < 3)
    unicode-display_width (2.1.0)
    warden (1.2.9)
      rack (>= 2.0.9)
    websocket-driver (0.6.5)
      websocket-extensions (>= 0.1.0)
    websocket-extensions (0.1.5)
    wicked_pdf (2.6.2)
      activesupport
    will_paginate (3.3.1)
    will_paginate-bootstrap (1.0.2)
      will_paginate (>= 3.0.3)
    wkhtmltopdf-binary (0.12.6.5)

PLATFORMS
  ruby

DEPENDENCIES
  angular-rails-templates
  angular-ui-bootstrap-rails
  angularjs-rails
  aws-sdk (< 2.0)
  better_errors
  binding_of_caller
  bootstrap-sass
  byebug
  coffee-rails (~> 4.2)
  devise
  figaro
  font-awesome-sass (~> 4.4.0)
  jbuilder
  jquery-rails
  jquery-turbolinks
  jquery-ui-rails
  omniauth
  omniauth-facebook
  omniauth-google-oauth2
  paperclip
  pg
  pry
  puma
  rails (~> 5.1.4)
  rails_12factor
  redis (~> 3.0)
  rubocop
  sass-rails
  spring
  therubyracer
  turbolinks (~> 5)
  uglifier (>= 1.3.0)
  wicked_pdf
  will_paginate
  will_paginate-bootstrap
  wkhtmltopdf-binary

RUBY VERSION
   ruby 2.6.0p0

BUNDLED WITH
   1.17.3


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