having trouble to include relations with query function

export const eventsRelations = relations(events, ({ many, one }) => ({
  host: one(users, {
    fields: [events.createdBy],
    references: [users.id],
  }),
}));

export const usersRelations = relations(users, ({ many }) => ({
  events: many(events),
}));

  async getEventBySlug(slug: string): Promise<selectEvent | undefined> {
    const data = await db.query.events.findFirst({
      with: { host: true },
      where: and(eq(events.slug, slug), isNull(events.deletedAt)),
    });

    if (data) return data as selectEvent;
    else return undefined;
  }