TypeError: Cannot read properties of undefined (reading 'day')

[sentry-io]

Sentry Issue: PYCON-FRONTEND-34

TypeError: Cannot read properties of undefined (reading 'day')
  File "webpack://pyconit/src/pages/schedule/index.tsx", line 21, in getServerSideProps
    const firstDay = days[0].day;
  File "node:internal/process/task_queues", line 95, in process.processTicksAndRejections
  File "/var/task/frontend/node_modules/.pnpm/@sentry+nextjs@7.38.0_next@13.1.1+react@18.2.0/node_modules/@sentry/nextjs/cjs/server/utils/wrapperUtils.js", line 39, in <anonymous>
    return await origFunction.apply(this, origFunctionArguments);
  File "/var/task/frontend/node_modules/.pnpm/@sentry+nextjs@7.38.0_next@13.1.1+react@18.2.0/node_modules/@sentry/nextjs/cjs/server/utils/wrapperUtils.js", line 137, in <anonymous>
    return await origDataFetcher.apply(this, args);
  File "/var/task/frontend/node_modules/.pnpm/@sentry+nextjs@7.38.0_next@13.1.1+react@18.2.0/node_modules/@sentry/nextjs/cjs/server/wrapGetServerSidePropsWithSentry.js", line 43, in Object.apply
    const serverSideProps = await (tracedGetServerSideProps.apply(thisArg, args)
...
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