On the scale of investment risk, this fund can be considered amongst the lowest available. That’s because it invests in high quality assets, like government bonds, and only loans money on a short-term basis to reputable companies and governments.
There is a risk that the forecast of projected yield might not be fulfilled over a longer period e.g. if the central bank lowers its base rate over time. But this fund is designed to transact at a constant price, so you shouldn’t get back less than the initial principal you invested, in the short term.