Issue Cannot read property 'site' of undefined

[Mythotical]

When I click on "Websites & Domains" I received a message at the top of the page in red "Internal Error". When I click on it this is what comes up in a red box to the right:

TypeError: Cannot read property 'site' of undefined
in DynamicListRowBody
in div
in div
in td
in tr
in t
in t
in tbody
in table
in div
in div
in Unknown
in Measure
in t
in a
in t
in r
in a
in div
in u
in withPageContent(a)
in t
in o
in withRouter(o)
in t
in _
in t
in s
in Unknown
in I
in t
in t
in u
in c
in StrictMode
in i

What I did prior to this happening was removed the default certificate and change the hostname to "tavern.goblin-technologies.com" then attempted to issue a certificate for the new hostname so my Plesk would be secure. All I have now is a Server Pool certificate folder on the Let's Encrypt page. I went to "Websites & Domains" to update the domain to use the new Server Pool certificate folder but I'm presented with "Internal Error."

Will I have to reinstall Plesk but use the manual installer so I can tell it what hostname to use?