In the Appendix A of Ghosts of Saltmarsh, there is a section about Magical Storms on page 205, relating to each of the different schools of magic. The one about divination magic says:
When divination magic seeps into a storm, howling winds and residual whispers temporarily scramble the knowledge of a ship's crew; for 1d3 days, the ship's crew suffers disadvantage on all quality checks.
What is a "quality check"? Is this a mistake? I assume it means ability check, but maybe it refers to something from a previous edition of D&D (I know that the adventures were from previous editions, so maybe these rules were lifted from previous editions too?). Has there been errata released about this?