"_OBJC_CLASS_$_UNNotificationAttachment", referenced from:” error.

I’ve just transfer my app to Backendless to 4.1.3 and I’ve downloaded the “data tables” code and i’m getting an “ “OBJC_CLASS$_UNNotificationAttachment”, referenced from:” error. I think the SDK that i’m using is 4.0.10 (was 4.0.8) and i’ve run “pod update”.

Any Ideas?


Hi Jason,

What version of iOS do you compile your app for?


Hi Mark,
I was originally using iOS10 but i also had the same problem with iOS11.

I’ve just spotted a note within the pod file, suggesting uncommenting a line (see below) and it seemed to have worked.

Uncomment the next line to define a global platform for your project

platform :ios, ‘8.0’

target ‘FeisLog-Data’ do

Uncomment the next line if you’re using Swift or would like to use dynamic frameworks


Pods for FeisLog-Data

pod ‘Backendless’, ‘~> 4.0’