User manuals are supposed to be in this menu.
However in the Prime Bass instrument there is none.
The url provided goes to an almost empty web page.
Yes, I just went to where I previously found it
https://www.native-instruments.com/en/products/komplete/guitar/session-bassist-prime-bass/#:~:text=ONLINE%20MANUAL-,User%20manual%3A,-DOWNLOAD%20MANUAL
and downloaded it to the Prime Bass documentation folder. Now it shows up in the menu in Kontakt.
That link is indeed wrong. But you can always visit the product page, and then see there's both an online manual, and a PDF manual you can download (at the bottom of the product page).
https://nativeinstruments.github.io/ni-tech-manuals/prime-bass-manual/en/index-en
