Subscription unable to unregister

Unable to unregister content host through foreman UI, when you click to “unregister host” button it keeps pending without completion(waited 5min) and logs show:

2020-06-11T18:05:39 [I|app|beed92e4] Started DELETE "/api/v2/hosts/98/subscriptions" for <IP Address here> at 2020-06-11 18:05:39 +0300
2020-06-11T18:05:39 [I|app|beed92e4] Processing by Katello::Api::V2::HostSubscriptionsController#destroy as JSON

Foreman and Katello versions:
Upgraded today:
Foreman 1.24.3 -> 2.0.1
Katello 3.14.1 ->

Distribution and version:
Centos 7.8

Any idea on how i could further debug it or is it already a known bug?