Cannot drop index 'idx': needed in a foreign key constraint

export const userProfile = mysqlTable('user_profile', {
        id: int("id").primaryKey().autoincrement()
    userId: int('user_id'),
    profilePicture: text('profile_picture').notNull(),
    updatedAt: datetime('updated_at'),
    bio: text('bio').notNull(),
    age: int('age').notNull(),
}, (userProfile) => ({
     userIdIndex: uniqueIndex("user_id_index").on(userProfile.userId)
}));

export const userProfile = mysqlTable('user_profile', {
    userId: int('user_id')
              .primaryKey()
          .references(() => users.id),,
    profilePicture: text('profile_picture').notNull(),
    updatedAt: datetime('updated_at'),
    bio: text('bio').notNull(),
    age: int('age').notNull(),
})