Errors with PerfPowerTelemetryClientRegistrationService and PPSClientDonation when running iOS application in Xcode

Question

Created 3w

Replies 5

Boosts 3

Participants 3

I've suddenly started seeing hundreds of the same block of four error messages (see attached image) when running my app on my iOS device through Xcode. I've tried Cleaning the Build folder, but I keep seeing these messages in the console but can't find anything about them.

Phone is running iOS 26.1. Xcode is at 16.4. Mac is on Sequoia 15.5. The app is primarily a MapKit SwiftUI based application.

Screenshot 2026-01-03 at 7.44.30 PM.png

Messages below:

Connection error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.PerfPowerTelemetryClientRegistrationService was invalidated: Connection init failed at lookup with error 159 - Sandbox restriction." UserInfo={NSDebugDescription=The connection to service named com.apple.PerfPowerTelemetryClientRegistrationService was invalidated: Connection init failed at lookup with error 159 - Sandbox restriction.}

(+[PPSClientDonation isRegisteredSubsystem:category:]) Permission denied: Maps / SpringfieldUsage

(+[PPSClientDonation sendEventWithIdentifier:payload:]) Invalid inputs: payload={
    isSPR = 0;
}

CAMetalLayer ignoring invalid setDrawableSize width=0.000000 height=0.000000

I'm also seeing the following error messages:

CoreUI: CUIThemeStore: No theme registered with id=0

Answered by DTS Engineer in 872557022

Is this correlated to an observable problem in your app?

If not, see my advice in On Log Noise.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Boost

Answer 1

ToadleDum OP

1w

Did you ever find an answer for this?

0

Answer 2

DTS Engineer OP

Apple

1w

Recommended

Is this correlated to an observable problem in your app?

If not, see my advice in On Log Noise.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0

Answer 3

FT-cfoy OP

10h

Thanks Quinn. This looks to possibly be an internal Apple bug with MKMapView. I can recreate the issue with the following code:

import MapKit
import SwiftUI

struct MyMapkitView: UIViewRepresentable {
    typealias UIViewType = MKMapView
  
    func makeUIView(context: Context) -> MKMapView {
        return MKMapView()
    }
    
    func updateUIView(_ uiView: MKMapView, context: Context) {}
}

struct ContentView: View {
    var body: some View {
        VStack {
            MyMapkitView()
        }
        .padding()
    }
}

Which immediately gives the errors below that match what I'm seeing in my app.

I wish I could ignore it, but it quite literally is happening 2-3 times a second so the log is completely buried with these messages. This only started happening when I upgraded Xcode to 26.

Screenshot 2026-01-26 at 9.21.04 PM.png

0

Answer 4

FT-cfoy OP

10h

I've submitted a bug report with this - FB21768382

0

Answer 5

DTS Engineer OP

Apple

25m

I wish I could ignore it

)-;

I've submitted a bug report with this FB21768382

Thanks. That’s definitely the right choice in this situation.

Also, please add a sysdiagnose log to that bug, one taken on your device shortly after reproducing the issue. That helps with the triage.

On the workaround front, you’re using MKMapView via UIViewRepresentable. If you switch to the shiny new Map SwiftUI view, does that avoid the problem?

Another option is to filter these log entries out in Xcode:

Locate the Filter box at the bottom of the Console debug area.
Copy the string subsystem:com.apple.PerfPowerServices and paste it into the box.
That’ll create a Subsystem filter. In the menu hanging off that filter, select “≠ is not”.

For many other systems log hints and tips, see Your Friend the System Log.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0