Unless you have limited your plan in such a way that speed sessions cannot be scheduled†, this will be correct, and is an example of the personalisation of TrainAsONE - it is scheduling the mix of workouts that are the most beneficial for you to safely reach your goal(s).
This situation is most likely to arise duration the early stages of a training plan, particularly when training for a long distance event (e.g. half or full marathon). It is also more common for slower runners.
So continue to follow your plan, safe in the knowledge that it is right for you, and you will no doubt see that within a few weeks those speed workouts will suddenly start appearing.
† There are primarily two mechanisms that lead the system not to be able to schedule speed sessions. The first is by turning off speed workouts, and the second is by setting the maximum duration permitted for your runs to a very low value. Both of these aspects are configured in your Training Settings.