Error in loading google Ads: com.google.admob Code=8 Swift ios

Question

Can someone help me with this Error?:

Error Domain=com.google.admob Code=8 "Cannot find an ad network adapter with the name(s): com.google.DummyAdapter. Remember to link all required ad network adapters and SDKs, and set -ObjC in the 'Other Linker Flags' setting of your build target." UserInfo={NSLocalizedDescription=Cannot find an ad network adapter with the name(s): com.google.DummyAdapter. Remember to link all required ad network adapters and SDKs, and set -ObjC in the 'Other Linker Flags' setting of your build target.}