This error means that n4ce has not been installed correctly.
To resolve this, follow the steps below...
Click on this link: https://supportportal.thalesgroup.com/csm?sys_kb_id=61fb0ee1dbd2e78cfe0aff3dbf9619ab&id=kb_article_view&sysparm_rank=2&sysparm_tsqueryId=a8fc09ff1b6e9810f12064606e4bcb72&sysparm_article=KB0018320
Click on DOW0003347 to download the file:
Scroll to the bottom of the T's & C's and click ACCEPT
Once the file has been downloaded, please Run and install it.
n4ce should then operate correctly