I have a problem when building in xcode - library not found for -liconv Please help me solve this problem

Hi all. We recently submitted our game for review in the app store connect, and got the following error: And also on our page of built-in purchases, such an icon is displayed and in front of it is written waiting for verification. We submitted all in-app purchases for review with the first build but received the above error. We work in Unity3D engine. If anyone faced this problem, please help me to fix this error.