Banner Ads not Working in Build

I recently implemented banner and interstitial ads in my game. The interstitial ads are working in both the editor and the build, but the banner ads are only showing in the editor. Even in test mode, the banner ads will not show in the build. Is there a known fix for this? I used Logcat to find the error: 2021/12/08 08:13:44.880 25489 25510 Error Unity java.lang.NoSuchMethodError: no static method with name='loadBanner' signature='(Lcom.unity3d.player.UnityPlayerActivity;)V' in class Lcom.unity3d.services.banners.UnityBanners;