Unable to get TTN integration with AWS IoT working

I am trying to integrate TTN device connection with AWS according to this tutorial: https://www.thethingsindustries.com/docs/integrations/cloud-integrations/aws-iot/deployment-guide/
I am using sandbox template for eu1 (so the cluster is eu1.cloud.thethings.network).
Erorrs appear when i try to create a stack (like in the picture belowe).


The following resource(s) failed to create: [CheckVersionFunction9003A7D6, CheckVersionEventsRule19A4B72A, InvokeHandleDownlinkAckFunctionFromRule, InvokeHandleDownlinkQueueInvalidatedFunctionFromRule, Configuration]. Rollback requested by user.

Do you have any ideas what could be reasons for the errors and how to fix it?
If you need more details to figure it out let me know.
Thank you in advance!