Error: no 'assign', 'retain', or 'copy' attribute is specified

Hi,

I am getting this error when remotely compiling for iOS from PC. Any idea what it means?

In file included from E:\Program Files\Epic Games\UE_4.21\Engine\Intermediate\UnzippedFrameworks\ThirdParty\IOS\Google\GoogleMobileAds.embeddedframework\GoogleMobileAds.framework\Headers\GoogleMobileAds.h:38:
E:\Program Files\Epic Games\UE_4.21\Engine\Intermediate\UnzippedFrameworks\ThirdParty\IOS\Google\GoogleMobileAds.embeddedframework\GoogleMobileAds.framework\Headers\GADMediaContent.h:21:1: error: no 'assign', 'retain', or 'copy' attribute is specified - 'assign' is assumed [-Werror,-Wobjc-property-no-attribute]
@property(nonatomic, nullable) UIImage *mainImage;
^

1 year later I answer myself

#pragma clang diagnostic ignored "-Wobjc-property-no-attribute"

Thanks so much for coming back to do that. Saved me from prolonged misery.

lol, you are welcome!