Magento2 add to Wishlist then error is showing this : Item (MagentoWishlistModelItemInterceptor) with the same ID “7” already exists

Frontend customer dashboard adds to Wishlist issue :

Magento2 add Wishlist then an error is showing this: Exception #0 (Exception): Item (MagentoWishlistModelItemInterceptor) with the same ID “7” already exists.

so give me the solution