Version 348.v5d461e205da_a_ proves to be very difficult to install without stopping the Jenkins start-up.  Once all latest versions of the dependencies were also correct, Jenkins would successfully start, which is fair I guess.

Regardless, this version soon 'oops/devils' the Manage Jenkins page, forcing a Jenkins restart.

However, after significant testing, the above problems seem related to Java version past 11.

Ultimately rolling back to Java 11, it was found that the Scriptler menu item on the bottom of the left navigation pane was missing.  Also, trying to go to the url manually reported unauthorized.

We rolled back one version of Scriptler and functionality appears correct.

Dissatisfied with the java version limitation.