The Norwegian 1 course shows that I’ve learned 229 of 230 words. However, each individual lesson shows that I’ve completed all words (which sum to 230).
When I select “Words and Phrases”, I get an error “Error Sorry, there was an error loading the session!”.
You have reported that you have learned all the words, but the program thinks there is still one word left. This is a bug and you are right to comment on this forum.
PS: This type of bug is also appearing in the Norwegian 2 for British English speakers (see here and here) and Norwegian 2 for American English speakers (see here).