Herokuへのデプロイ時に「ActiveSupport::MessageEncryptor::InvalidMessage」が生じる

バージョン情報

ruby -v
ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-darwin19]

rails -v
Rails 6.0.2.2

heroku -v
heroku/7.39.6 darwin-x64 node-v12.16.2

実現したいこと

Herokuへのデプロイ。
しかし、Herokuへのデプロイ時に以下のメッセージが発生しました。

発生している問題・エラーメッセージ

git push heroku master

-----> ActiveStorage Preview app detected
-----> Installing binary dependencies for ActiveStorage Preview
       Reusing cache
       Downloading packages..
       Installing packages.....
-----> Ruby app detected
-----> Installing bundler 2.0.2
-----> Removing BUNDLED WITH version in the Gemfile.lock
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.5.7
-----> Installing dependencies using bundler 2.0.2
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
...省略
       Bundle complete! 42 Gemfile dependencies, 112 gems now installed.
       Gems in the groups development and test were not installed.
       Bundled gems are installed into `./vendor/bundle`
       Bundle completed (0.66s)
       Cleaning up the bundler cache.
-----> Installing node-v10.15.3-linux-x64
-----> Installing yarn-v1.16.0
-----> Detecting rake tasks
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       ActiveSupport::MessageEncryptor::InvalidMessage: ActiveSupport::MessageEncryptor::InvalidMessage
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/message_encryptor.rb:206:in `rescue in _decrypt'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/message_encryptor.rb:183:in `_decrypt'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/message_encryptor.rb:157:in `decrypt_and_verify'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/messages/rotator.rb:21:in `decrypt_and_verify'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/encrypted_file.rb:80:in `decrypt'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/encrypted_file.rb:43:in `read'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/encrypted_configuration.rb:21:in `read'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/encrypted_configuration.rb:33:in `config'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/encrypted_configuration.rb:38:in `options'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/core_ext/module/delegation.rb:297:in `method_missing'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/devise-4.7.1/lib/devise/secret_key_finder.rb:24:in `key_exists?'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/devise-4.7.1/lib/devise/secret_key_finder.rb:10:in `find'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/devise-4.7.1/lib/devise/rails.rb:37:in `block in <class:Engine>'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/initializable.rb:32:in `instance_exec'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/initializable.rb:32:in `run'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/initializable.rb:61:in `block in run_initializers'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/initializable.rb:60:in `run_initializers'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/application.rb:363:in `initialize!'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/config/environment.rb:5:in `<top (required)>'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/zeitwerk-2.3.0/lib/zeitwerk/kernel.rb:23:in `require'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:325:in `block in require'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:291:in `load_dependency'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:325:in `require'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/application.rb:339:in `require_environment!'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/railties-6.0.2.2/lib/rails/application.rb:515:in `block in run_tasks_blocks'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/sprockets-rails-3.2.1/lib/sprockets/rails/task.rb:62:in `block (2 levels) in define'
       /tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/rake-13.0.1/exe/rake:27:in `<top (required)>'`
       
       Caused by:
       OpenSSL::Cipher::CipherError:
/tmp/build_4cdbf9d0b2c328a5d1fe29584a02f934/vendor/bundle/ruby/2.5.0/gems/activesupport-6.0.2.2/lib/active_support/message_encryptor.rb:201:in `final'
..省略
       Tasks: TOP => environment
       (See full trace by running task with --trace)
 !
 !     Precompiling assets failed.
 !
 !     Push rejected, failed to compile Ruby app.
 !     Push failed