Chain orderBy clause problem

  const instructors = await db
    .select()
    .from(DBInstructors)
    .where(
      and(
        department ? eq(DBInstructors.department, department) : undefined,
        eq(DBInstructors.section, section)
      )
    )
    .orderBy(
      sortName === 'asc' ? asc(DBInstructors.name) : desc(DBInstructors.name)
    )
    .orderBy(
      sortRating === 'lowest'
        ? asc(DBInstructors.rating)
        : desc(DBInstructors.rating)
    )
    .offset(currentPage)
    .limit(10);