Uncaught (in promise) TypeError: Cannot read property 'textContent' of null

[muescha]

github-notifications-preview.js:386 Uncaught (in promise) TypeError: Cannot read property 'textContent' of null
    at $i4sc$var$updateUnreadCount (github-notifications-preview.js:386)

Line 386:

    const latestCount = $TTsE$export$default('.js-notification-inboxes .selected .count', (await $i4sc$var$notifications.dom)).textContent;

it is this line in repo: https://github.com/tanmayrajani/notifications-preview-github/blob/c7a651f3bfdb6360485d65f297341b3bba29234c/extension/github-notifications-preview.js#L55

[muescha]

Version:

Version
20.5.22