[4.x]: Upgrading from Craft 4.0.6 to 4.1.0 - 502 Bad Gateway

[magnessjo]

What happened?

Description

server throwing a 502 after upgrade

Steps to reproduce

1. Update all plugins and craft to the latest before 4.1.0
2. Then run update for Craft 4.1.0

Expected behavior

Actual behavior

Craft CMS version

4.1.0

PHP version

8.1.6

Operating system and version

OS

Database type and version

Mac 13.0 beta v2

Image driver and version

GD 8.1.6

Installed plugins and versions

NEO 3.1.5

[magnessjo]

Seems related to custom module. I removed the module and update worked so I am going to dig deeper into the code.

[brandonkelly]

@magnessjo Do you mind sending your module code over to support@craftcms.com so we can dig into it on our end? There shouldn’t be any breaking changes in 4.1.

[magnessjo]

@brandonkelly - it's not the module (technically a plugin in this repo). I have removed it, cleared cache, did a rain dance and the error persists.

The project experiencing the issue is still in early draft state (mostly only front end development). Other production sites with much more complexity (custom module, OAuth, etc) are able to be updated to 4.1 without issue.

Happy to provide any code/db/etc but don't want to lead you down a rabbit hole. I'll still crossing things off my list but confident that it's not local env or module.

[RyanRoberts]

Same problem here, no custom module but I do have various plugins installed.

[magnessjo]

I was able to track down the problem (not the solution),

in app.php - There is some generic code in place (I didn't add it - or at least I don't think I did - maybe part of the base now?)

Anyway, if you remove my-module' => \modules\Module::class,, then the error will go away.

[brandonkelly]

We were able to reproduce with someone’s database, and just released Craft 4.1.0.1 with a fix. Thanks everyone!

[RyanRoberts]

We were able to reproduce with someone’s database, and just released Craft 4.1.0.1 with a fix. Thanks everyone!

This was the problem I was having, updating fixed it indeed.