# TypeError: Cannot read property 'id' of undefined

**URL:** https://meta.discourse.org/t/typeerror-cannot-read-property-id-of-undefined/102922
**Category:** Support
**Created:** [11월 28, 2018, 12:23오전 UTC](https://meta.discourse.org/t/typeerror-cannot-read-property-id-of-undefined/102922 "2018-11-28T00:23:11Z")
**Posts on this page:** 1
**Showing post:** 11

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### Author: ![RGJ](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/rgj/32/523185_2.png) [@RGJ](https://meta.discourse.org/u/RGJ)
#### Post date: [11월 28, 2018, 7:23오후 UTC](https://meta.discourse.org/t/typeerror-cannot-read-property-id-of-undefined/102922/11 "2018-11-28T19:23:51Z")

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Yes, upgraded to latest yesterday (twice) and today (twice).

Do you have any pointers about that fix? I can’t find anything that seems related.

[This one](https://meta.discourse.org/t/forum-doesnt-work-as-expected-after-latest-upgrade-tests-passed/102884) is a different issue but I think [this one is the same issue](https://meta.discourse.org/t/whos-online-plugin-discourse-whos-online/52345/189) that was incorrectly attributed to the whos-online plugin.

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