Hi! Which recipe are you running? And are you on the latest stable version or the nightly?
The "no tasks available" message is shown when there are no examples left returned by the stream. One common reason you may end up seeing fewer examples than in your input data is if your data contains duplicates, because Prodigy will only ask you about the same text once. Also double-check whether your dataset is empty, because Prodigy will skip examples that have been annotated previously. So if you already annotated a batch of 10 examples before, you'll only see the remaining 40.
If you're using a recipe like
textcat.teach, keep in mind that this will filter the examples and focus on predictions with the most uncertain scores, so you may not be asked about every single example (unlike in the manual workflows).