TypeError: n is undefined

[komagata]

View details in Rollbar: https://rollbar.com/komagata/Bootcamp/items/1131/

TypeError: n is undefined
  File "webpack:///app/javascript/components/reports.vue", line 146, in t/<
          const json = await response.json().catch((error) => console.warn(error))
  File "webpack:///./node_modules/regenerator-runtime/runtime.js", line 63, in u
          return { type: "normal", arg: fn.call(obj, arg) };
  File "webpack:///./node_modules/regenerator-runtime/runtime.js", line 293, in l/a._invoke</<
            var record = tryCatch(innerFn, self, context);
  File "webpack:///./node_modules/regenerator-runtime/runtime.js", line 118, in k/</<
            return this._invoke(method, arg);
  File "unknown", line 21, in Gs
  File "unknown", line 139, in s