Full error reports do not show up in development env

[wulab]

Gem version

rails 7.1.1
rollbar 2.27.1

Configuration

# config/environments/development.rb
# Show full error reports.
config.consider_all_requests_local = true

# config/initializers/rollbar.rb
config.access_token = ENV['ROLLBAR_ACCESS_TOKEN']
config.enabled = Rails.env.production?
config.environment = ENV['ROLLBAR_ENV'].presence || Rails.env

Description

Both ROLLBAR_ACCESS_TOKEN and ROLLBAR_ENV env vars are not set. The cause seems to be having the rollbar gem installed and initialized. Removing the gem restores the full error reports back in the browser.