Let's say that there are different numbers presented to the user - money values ($1.50), percentage values (+25.53%), development values (+$3.50), etc. In case there is an error in retrieving one of these, or all values - how should this be communicated to the user? Not showing any numbers and displaying an error? Showing greyed out zeros for values ($0.00)?
Let's say one value is loaded and other two are not - is showing one of them and hiding the ones that hasn't loaded is okay and wouldn't be confusing? Or placing something in place of error numbers would be preferred?