I'm getting the following error when trying to load an interstitial ad through admob in my iOS app. I'm thinking I have something configured wrong, but I'm not really sure what the error message means in order to debug any further. Can someone PLEASE tell me what this means?

Error Domain=com.google.admob Code=21 "The ad string could not be loaded because it was invalid." UserInfo={NSLocalizedDescription=The ad string could not be loaded because it was invalid.}

Failing code:

let adUnitID = "ca-app-pub-3940256099942544/4411468910" // admit test interstitial ad unit id
interstitial = try await InterstitialAd.load(with: adUnitID)

Thanks in advance!

I'm getting the following error when trying to load an interstitial ad through admob in my iOS app. I'm thinking I have something configured wrong, but I'm not really sure what the error message means in order to debug any further. Can someone PLEASE tell me what this means?

Error Domain=com.google.admob Code=21 "The ad string could not be loaded because it was invalid." UserInfo={NSLocalizedDescription=The ad string could not be loaded because it was invalid.}

Failing code:

let adUnitID = "ca-app-pub-3940256099942544/4411468910" // admit test interstitial ad unit id
interstitial = try await InterstitialAd.load(with: adUnitID)

Thanks in advance!

• ios
• admob

• Did you include an ID in the plist file as well? – sonle Commented yesterday
• I have GADApplicationIdentifier in there as well as a list of SKAdNetworkItems. Is there anything else I should have in there? – Jake Commented yesterday
• Hmm, it should work as far as you matched all the configurations. Can you try to fulfill all the parameters from the .load method? I think it has a Request(). – sonle Commented yesterday
• 1 wow. that was it. I assumed not passing that parameter would just have a default request, but I guess not