CricleCIでRspecが通らない

前提・実現したいこと

CircleCIでRspecを実行しようとしているものです．
Rspecで以下のようなエラーが出てしまい，そもそも実行されません．
解決策を提示していただけると幸いです．

発生している問題・エラーメッセージ

#!/bin/bash -eo pipefail
dockerize -wait tcp://localhost:5432 -timeout 1m
bundle exec rake db:schema:load

2021/09/08 17:32:40 Waiting for: tcp://localhost:5432
2021/09/08 17:32:40 Connected to tcp://localhost:5432
rake aborted!
NoMethodError: undefined method `[]' for nil:NilClass
/home/circleci/project/config/initializers/geocoder.rb:10:in `<main>'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in `load'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in `load'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:326:in `block in load'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:326:in `load'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/engine.rb:681:in `block in load_config_initializer'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/notifications.rb:205:in `instrument'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/engine.rb:680:in `load_config_initializer'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/engine.rb:634:in `block (2 levels) in <class:Engine>'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/engine.rb:633:in `each'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/engine.rb:633:in `block in <class:Engine>'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:32:in `instance_exec'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:32:in `run'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:61:in `block in run_initializers'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:50:in `each'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:50:in `tsort_each_child'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/initializable.rb:60:in `run_initializers'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/application.rb:384:in `initialize!'
/home/circleci/project/config/environment.rb:5:in `<main>'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/zeitwerk-2.4.2/lib/zeitwerk/kernel.rb:34:in `require'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:332:in `block in require'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/activesupport-6.1.3.2/lib/active_support/dependencies.rb:332:in `require'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/application.rb:360:in `require_environment!'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/application.rb:526:in `block in run_tasks_blocks'
/home/circleci/project/vendor/bundle/ruby/2.6.0/gems/rake-12.3.3/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => db:schema:load => db:load_config => environment
(See full trace by running task with --trace)

Exited with code exit status 1
CircleCI received exit code 1

.circleci/config.yml

version: 2
jobs:
  build:
    docker:
      - image: circleci/ruby:2.6.3-node-browsers-legacy
        environment:
          RAILS_ENV: test
          POSTGRES_HOST: 127.0.0.1
          TZ: "Japan"

      - image: circleci/postgres:9.4
        environment:
          POSTGRES_USER: app_user_role
          POSTGRES_DB: study_support_app_test
          POSTGRES_PASSWORD: password
          # POSTGRES_HOST_AUTH_METHOD: 'trust'
        working_directory: ~/repo

    steps:
      - checkout

      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "Gemfile.lock" }}
            - v1-dependencies-

      - run: bundle install --jobs=4 --retry=3 --path vendor/bundle

      - save_cache:
          paths:
            - ./vendor/bundle
          key: v1-dependencies-{{ checksum "Gemfile.lock" }}

      - restore_cache:
          keys:
            - rails-demo-yarn-{{ checksum "yarn.lock" }}
            - rails-demo-yarn-

      - run: yarn install --ignore-engines

      - save_cache:
          key: rails-demo-yarn-{{ checksum "yarn.lock" }}
          paths:
            - ~/.cache/yarn

      # Rubocop
      - run:
          name: Rubocop
          command: bundle exec rubocop --fail-level W --display-only-fail-level-offenses

      - run:
          name: "waiting DB start"
          command: |
            dockerize -wait tcp://localhost:5432 -timeout 1m

      - run:
          name: "initialize DB"
          command: |
            bundle exec rake db:create
            bundle exec rake db:migrate
            
      - run:
          name: rspec
          command: |
            bundle exec rspec --format RspecJunitFormatter \
                              --out test_results/rspec.xml \
                              --format documentation
      - store_test_results:
          path: test_results