I'm logged in as sc_admin and gave that user all roles and all rights.
I also gave it ownership over everything (probably overkill). Still no luck
I saw an issue similar to this in a support post for Splunk Enterprise.
You can try to contact Splunk support number and ask them to do a rolling restart or manually check your role permissions on SH since we doesn't have back end access to those ones.
Btw, Is your authentication tied to a SAML/AD provider?