DPUL Success Dashboard is erroring

[tpendragon]

Description

When querying the DPUL Success Dashboard we're getting an error.

Acceptance Criteria

Using https://figgy.princeton.edu/reports/dpul_success_dashboard works.

First Step

Diagnose what's causing the below error.

Sudden Priority Justification

Without the success dashboard we can't tell if our work with DPUL-C is effective. However, as this is just visualizing a current state, the priority isn't super high.

Backtrace

line 70 of [PROJECT_ROOT]/app/services/dpul_success_dashboard_report_generator.rb: traffic
line 37 of [PROJECT_ROOT]/app/services/dpul_success_dashboard_report_generator.rb: daily_metrics
line 47 of [PROJECT_ROOT]/app/views/reports/dpul_success_dashboard.html.erb: _app_views_reports_dpul_success_dashboard_html_erb__1377258794076482274_26025880

View full backtrace and more info at honeybadger.io