Error: Class name must be a valid object or a string

Why do you think it has anything to do with this module? None of your error messages refer to any code in this module, and the failure occurred when updating the system module which is part of Drupal core ...

Hi TR,

I'm admittedly grasping at straws.

I saw "TypedData" and Google sent me here.

I'm familiar with your work on Ubercart.

Please point me in a different direction and I'll go there.

- cheers

What I see is that the failure happened somewhere when running system.post_update.php, which is part of the Drupal core "system" module. And in particular, it failed while running the function system_post_update_add_langcode_to_all_translatable_config() that is found in system.post_update.php

The classes like \Drupal\Core\TypedData\TypedDataManager that show up in the error messages are all part of the \Drupal\Core namespace, which means they are part of core Drupal. You can tell that by the \Drupal\Core part of the name.

If those classes where the failure occurred were part of the typed_data module, they would be named beginning with \Drupal\typed_data.

The system_post_update_add_langcode_to_all_translatable_config() update function was added by 🐛 Require `langcode: …` only for simple config that contains translatable values Active . Because that issue is still open and seems to have caused some problems, I would start by commenting in that issue and posting your error. You can link to this issue too. The people who worked on that issue might have a better idea of what is happening here.

It would also be useful to add what version of core you were updating from and what version you were updating to. If composer is also updating other modules in the process, it would be useful to mention which modules were listed as being updated - your composer output would show this.

Also, did you check the watchdog to see if the errors are logged like it said?