Hi @BenterAdede, I'm sorry to hear you're having an issue loading questions to your practice test. We appreciate you reporting this.
I recommend taking a look at this article to see a step-by-step guide. If you still continue to receive this error, could you please send the .CSV file you are trying to upload along with a screenshot of the error message you are receiving to our Instructor Support team via this link?
The team is best equipped to further look into this for you. Please let us know if you need anything else at this time!