# Rendering 'TypeError' with theme components after update

**URL:** https://meta.discourse.org/t/rendering-typeerror-with-theme-components-after-update/381263
**Category:** Bug
**Created:** [September 2, 2025, 10:10am UTC](https://meta.discourse.org/t/rendering-typeerror-with-theme-components-after-update/381263 "2025-09-02T10:10:38Z")
**Posts on this page:** 1
**Showing post:** 13

<div class="post-metadata">

### Author: ![david](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/david/32/157490_2.png) [@david](https://meta.discourse.org/u/david)
#### Post date: [September 2, 2025, 7:31pm UTC](https://meta.discourse.org/t/rendering-typeerror-with-theme-components-after-update/381263/13 "2025-09-02T19:31:45Z")

</div>

Ok great, thanks for confirming! We’ll try to solve this problem in the theme caching system, so that manual action isn’t required.

But in the meantime, for anyone else who runs into these issues:

```plaintext
Uncaught TypeError: Cannot read properties of null (reading ‘syscall’)

```

```plaintext
Uncaught (in promise) TypeError: Invalid value used as weak map key

```

Please take these steps on the console:

```plaintext
./launcher enter app
rails c
Discourse.clear_all_theme_cache!

```

---

_[View the full topic](https://meta.discourse.org/t/rendering-typeerror-with-theme-components-after-update/381263)._