In file jenkins\core\src\main\resources\hudson\security\FederatedLoginService\UnclaimedIdentityException\error.jelly:
must be
<l:layout title="${%loginError(it.identity.pronoun)}">
instead of
<l:layout title="${%loginError(it.identifier.pronoun)}">
and
<l:main-panel> <h1>${%loginError(it.identity.pronoun)}</h1> <p>${%blurb(it.identity.pronoun, it.identity.identifier)}</p> </l:main-panel>
instead of
<l:main-panel> <h1>${%loginError(it.identifier.pronoun)}</h1> <p>${%blurb(it.identifier.pronoun, it.identifier.identifier)}</p> </l:main-panel>
Reassigned to the core.
It's recommended to create a pull-request if you propose a fix