Issue Summary

User gets "Something went wrong" error message while accessing Sandbox page from https://admin.atlassian.com/o/<orgid>/sandbox, if:

1. There are Sandbox/es in an organization which are in offline state (soft deleted by user) and
2. Their billing system is different than parent site. For eg. Parent site is getting billed in new billing system (CCP) and offline Sandbox is billed in old billing system (HAMS).

Steps to Reproduce

1. Make sure Sandbox is billed in HAMS and is in Offline state
2. Make sure Parent site is billed in CCP
3. Access the sandbox page from https://admin.atlassian.com/o/<orgid>/sandbox

Expected Results

Sandbox page should load properly and show all the Sandboxes created under the organization

Actual Results

Loading of page takes some time before it gives error message "Something went wrong". In HAR logs, it can be seen that Sandbox service to fetch available offerings fails with HTTP error 500:

Request URL: https://admin.atlassian.com/gateway/api/sandbox/available-offerings/org?orgId=<orgid>
Request Method: GET
Status Code: 500 Internal Server Error 

Workaround

A workaround is to perform Hard Deletion of Sandbox site which is in offline state.

NOTE: The hard deletion of Sandbox is irreversible which means it the data in Sandbox cannot be restored once hard deleted.

Kindly reach-out to Atlassian Support to apply above workaround.