# 重建时出现 "undefined method \`deprecated?' for nil:NilClass"

**URL:** https://meta.discourse.org/t/undefined-method-deprecated-for-nil-nilclass-on-rebuild/251711
**Category:** Self-hosting
**Created:** [2023年一月13日 21:09 UTC](https://meta.discourse.org/t/undefined-method-deprecated-for-nil-nilclass-on-rebuild/251711 "2023-01-13T21:09:12Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [2023年一月14日 01:08 UTC](https://meta.discourse.org/t/undefined-method-deprecated-for-nil-nilclass-on-rebuild/251711/2 "2023-01-14T01:08:40Z")

</div>

> [@samyrabih](#):
>
> ```plaintext
> ERROR: Loading command: install (RuntimeError)
> failed to get urandom
> 
> ```

这看起来是问题所在。我无法想象原因。

---

_[View the full topic](https://meta.discourse.org/t/undefined-method-deprecated-for-nil-nilclass-on-rebuild/251711)._