Would you mind sharing how you fixed it? Thanks.

Thank you for your reply. The only reason that article piqued my interest was because it gave some meaning to at least one of the entitlements referenced by the error. Clearly, that entitlement is internal to iOS and cannot be added manually (I tried). I only wish that with so many people complaining, the issue would be proactively addressed or explained by Apple. Btw, there is still this other entitlement, com.apple.multitasking.systemappassertions, that I'd be interested to know more about.

A lot of people, myself included, have been recently having problems with running video and audio inside WKWebKit views. The common theme seems to be this kind of error: Error acquiring assertion: Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)} While researching the issue, I came across this article that discusses what apparently is the culprit - "RunningBoard: a new subsystem in Catalina to detect errors". Maybe you could explain what's happening here. Here is the link: https://eclecticlight.co/2019/11/07/runningboard-a-new-subsystem-in-catalina-to-detect-errors

My app is having problems playing videos inside a web view running on a webpage supplied by a 3rd party. My errors are: Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)" UserInfo={NSLocalizedFailureReason=(originator doesn't have entitlement com.apple.runningboard.assertions.webkit AND originator doesn't have entitlement com.apple.multitasking.systemappassertions)}> While researching this issue and not finding any answers, only questions, I have run into this article. It directly addresses the apparent culprit - "RunningBoard: a new subsystem in Catalina to detect errors". Perhaps others also can try to make sense of it. https://eclecticlight.co/2019/11/07/runningboard-a-new-subsystem-in-catalina-to-detect-errors