Retrieves a tag by the provided label.
Sub-labels can also be specified using a /. For example, you can have 'dessert/icecream' and 'dessert/pie' as two different tag labels.
Note: The full URL path following labels/ is counted as 1 label. Adding a / to a label does not create multiple labels. This means that 'dessert/icecream' is a single label.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.