# Visiting /admin/upgrade may lead to a server error

**URL:** https://meta.discourse.org/t/visiting-admin-upgrade-may-lead-to-a-server-error/274411
**Category:** Self-hosting
**Tags:** hosting
**Created:** [August 8, 2023, 8:54pm UTC](https://meta.discourse.org/t/visiting-admin-upgrade-may-lead-to-a-server-error/274411 "2023-08-08T20:54:56Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![amotl](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/amotl/32/109873_2.png) [@amotl](https://meta.discourse.org/u/amotl)
#### Post date: [December 15, 2023, 9:16pm UTC](https://meta.discourse.org/t/visiting-admin-upgrade-may-lead-to-a-server-error/274411/2 "2023-12-15T21:16:20Z")

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Hi David,

coming from [Internal Server Error on Upgrade page](https://meta.discourse.org/t/internal-server-error-on-upgrade-page/274331), we wanted to report that our Discourse instance on [https://community.panodata.org/](https://community.panodata.org/) trips with the same error.

```plaintext
ArgumentError (Malformed version number string < 3.2.0.beta2) lib/version.rb:44:in `block in find_compatible_resource' lib/version.rb:44:in `each' lib/version.rb:44:in `sort_by' lib/version.rb:44:in ` 

```

We are running 3.1.0.beta1 ([92bb728fe5](https://github.com/discourse/discourse/commits/92bb728fe52b71dbfbc181c03cad8fb0d84bed94)).

> [@david](#):
>
> Very few plugins have started using the new syntax, so we don’t expect this to be a particularly widespread issue.

[community.panodata.org](http://community.panodata.org) is a pretty much vanilla installation, and I just tried to install [Custom Header Links](https://meta.discourse.org/t/custom-header-links/90588) and [Custom Header Links (icons)](https://meta.discourse.org/t/custom-header-links-icons/86307), in order to customize it a bit. Given that 3.1.0.beta1 isn’t also that old, the issue may be more widespread than anticipated?

It is not a problem at all, we will happily run the CLI upgrade and everything will be good afterwards. We just wanted to make you aware of the fact that not only UI-based Discourse upgrades are impacted, but also the installation of arbitrary plugins, apparently.

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_[View the full topic](https://meta.discourse.org/t/visiting-admin-upgrade-may-lead-to-a-server-error/274411)._