Test case created by cloning an existing test case with test steps does not have the test steps.
Clone Link Type 'Cloners' does not exist or has incorrect values.
Ensure Clone Link Type 'Cloners' exists and has the proper value.
Link type can be viewed by adding secure/admin/ViewLinkTypes!default.jspa at the end of the jira host name like below
http://<your JIRA cloud url>/secure/admin/ViewLinkTypes!default.jspa
It should have the below values.
Name : Cloners
Outward Description : clones
Inward Description : is cloned by
There is a add button to create a new Link type. Please create one if you do not have one by default or use the edit button to set the proper values as mentioned above. This should resolve the issue.