**Tested with:** Browser / Version: Firefox Nightly 97.0a1 (2021-12-08), Chrome 96.0.4664.93 Operating System: Windows 10 **Steps to Reproduce**: 1. Navigate to http://webcompat-dashboard.herokuapp.com/intervention?start=2021-01-01&end=2021-12-09&distribution=upstream&type=all&=undefined 2. Observe the "Firefox WebCompat interventions" dashboard. **Expected Behavior:** [TBD] Dashboard is removed. [TBD] Data is retrieved and rendered correctly. **Actual Behavior:** No data is rendered and an error message is displayed. **Notes:** 1. More info: https://github.com/webcompat/webcompat-metrics-client/issues/293 2. Screenshot attached.  **Watchers:** @softvision-oana-arbuzov @softvision-raul-bucata