Fixed a minor problem in the get_logged_in_user function.

README.rst

@@ -343,7 +343,7 @@ to ask the user for the username and password again.
 
 
 Log In Bookkeeping
-=================#
+==================
 
 You can register a callback to run when the user logs in, for ex.,
 logging the log in event, adding the log in counter, etc.
@@ -402,6 +402,7 @@ Copyright
  See the License for the specific language governing permissions and
  limitations under the License.
 
+
 Authors
 =======
 

src/flask_digest_auth/auth.py

@@ -110,7 +110,7 @@ class DigestAuth:
         class NoLogInException(Exception):
             """The exception thrown when the user is not authorized."""
 
-        def get_logged_in_user() -> t.Optional[t.Any]:
+        def get_logged_in_user() -> t.Any:
             """Returns the currently logged-in user.
 
             :return: The currently logged-in user.
@@ -120,6 +120,7 @@ class DigestAuth:
                 raise NoLogInException
             user: t.Optional[t.Any] = self.__get_user(session["user"])
             if user is None:
+                del session["user"]
                 raise NoLogInException
             return user