VNImageRequestHandler perform 'unspecified error' on M1 MacBook Pro

Developer Tools & Services Xcode
ismconnect OP
Created Nov ’20
Replies 11
Boosts 0
Views 4.4k
Participants 11
I'm getting the following error when running a simple test of VNImageRequestHandler perform in Xcode:

failed: caught error: "Error Domain=com.apple.vis Code=9 "encountered an unexpected condition: Unspecified error" UserInfo={NSLocalizedDescription=encountered an unexpected condition: Unspecified error}

The test is as follows:

Code Block 
    func testExample() throws {
        let bundle = Bundle(for: type(of: self))
        let image = UIImage(named: "image.jpeg", in: bundle, with: nil)!
        let imageRequestHandler = VNImageRequestHandler(cgImage: image.cgImage!)
        let captureQualityRequest = VNDetectFaceCaptureQualityRequest()
        try imageRequestHandler.perform([captureQualityRequest])
    }


This error is happening on Xcode 12.2 (and 12.3 beta), macOS 11.0.1, and a Late 2020 13" M1 MacBook Pro.

This does not happen on Xcode 12.2 and macOS 11.0.1 on an Intel MacBook Pro.

Sample project can be found here:
https://gitlab.com/kabucey/vnimagerequesthandlertest

Has anyone encountered this before?

Replies  11
Boosts  0
Views  4.4k
Participants  11
DTS Engineer OP
Apple
Nov ’20
Hello,

I'm only seeing a "Hello World" in the sample project you posted.

Also, could you try running the Image Saliency sample on your M1 MacBook.

Thanks!
0
ismconnect OP
Dec ’20
This problem happens specifically with unit tests, and that test can be found in the sample project that was linked to.

The Image Saliency project runs fine but there aren't any unit tests in it.
0
trispo OP
Apr ’21
Hi,

I get the same error when running in the Simulator on a 2020 M1 MacBook Pro. On Intel everything works as expected.
0
datacausa OP
Jul ’21

I have this same error. Does anyone have a solution yet? Thanks.

0
datacausa OP
Jul ’21

I have this same error also when running my code in iPhone simulator on my m1 MacBook Air. Does anyone have a solution yet? Thanks. 

0
Will Loew-Blosser OP
Aug ’21

I am getting the error on simulator with iPadOS config (iPad Pro 12.9-9inch). Running on a physical iPad - error does not occur. Simulator is running on an iMac (24-inch, M1, 2021)

0
denisa_toderean1 OP
Feb ’22

I have the same error in xCode 13.1 while trying to run Vision in UnitTests. Did you find any solution meanwhile?

0
Colin Driver OP
Mar ’22

Still a problem on XCode 13.3, even running on Rosetta. Any Vision request from a test case in the simulator throws an error.

0
spullara OP
Jul ’22

This is still happening as of Xcode 13.4.1.

0
abalchunas OP
Aug ’22

This happens to me as well. Any workarounds so far?

0
SocureBoris OP
Nov ’22

I get a slightly different error in unit tests, only on my M1 laptop:

request VNDetectFaceRectanglesRequest was cancelled

But I found a solution!

#if targetEnvironment(simulator)
    faceDetectionRequest.usesCPUOnly = true
#endif
5
VNImageRequestHandler perform 'unspecified error' on M1 MacBook Pro
First post date Last post date
 
 
Q