Lens is loaded but nothing happened, Log.txt report: "Lens not loaded exception: invalid unordered_map<K, T> key".

[appSimfusion]

I published my lens and successfully downloaded in Snap Camera. However, there is nothing happened in the lens. I repackaged all "blendmode = 16" error. Then, I imported the lens.lns to docker server through "Snap Lens Cache Import" and overwrite is ticked. After that, I restart docker server and snap camera, but "Lens not loaded exception: invalid unordered_map<K, T> key" error after clicking that lens. I add the lens to favorites after I downloaded, I am not sure the imported one is the same one with my favorites one.
Lens Studio: 5.4.x

VCam::ActionType::SetActiveLensId QVariant(VCam::LensActivationEvent, )
VCam::ActionType::SetCoreProcessingLens QVariant(VCam::CoreProcessingLens, )
VCam::ActionType::ActiveLensChanged QVariant(VCam::LensInfo, )
VCam::ActionType::SetCoreProcessingOverlay QVariant(QImage, QImage(null))
VCam::ActionType::SetActiveLensId QVariant(VCam::LensActivationEvent, )
VCam::ActionType::ActiveLensChanged QVariant(VCam::LensInfo, )
VCam::ActionType::SetCoreProcessingLens QVariant(VCam::CoreProcessingLens, )
VCam::ActionType::SetMainLensHint QVariant(QString, "")
VCam::ActionType::LensDownloaded QVariant(QString, "410255378963652")
VCam::ActionType::SetCoreProcessingOverlay QVariant(QImage, QImage(null))
Core: CORE: using complex effect with id lns://C:/Users/user/AppData/Local/Snap/Snap Camera/cache/lenses/410255378963652/lens.lns@@
Core: [LS::Graphics::Context] this - 0000001B8E1FB700, glContext - 0000000000030001, glContextMode - 2
Core: [SGRenderer] Experiment value: 0
Core: bindScript executed
Core: [engine] engineComplexEffect started loading lens with id 410255378963652
Core: [engine] The lens under development mode is OFF
Core: [OpenGL] contextsMap doesn't contain eglContext 0000000000030001
Core: [LS::Graphics::~Context] this - 0000001B8E1FB700, glContext - 0000000000030001, glContextMode - 2
Core: [LS::Graphics::Context] this - 0000001B8E1FB480, glContext - 0000000000030001, glContextMode - 2
Core: CORE: [ResourceManager] Texture loading context is attached.
Core: Asset download succeeded for id: LENSCORE_OBJECT3D_TWO_HANDS_MODEL
Core: Asset download succeeded for id: LENSCORE_OBJECT3D_TWO_HANDS_MODEL
Core: [engine] engine exception while processing lens with id 410255378963652
Core: [OpenGL] contextsMap doesn't contain eglContext 0000000000030001
Core: [LS::Graphics::~Context] this - 0000001B8E1FB480, glContext - 0000000000030001, glContextMode - 2
"Lens not loaded exception: invalid unordered_map<K, T> key"
Core: CORE: [ResourceManager] Texture loading context is dettached.

The raw lens, repackaged lens and settings.json
Lens.zip

are attached if needed.

[ptrumpis]

You could try to publish the lens with a lower Lens Studio Version.

And you can try to copy the CoreResources.bundle directory.
See here

[rexcheung727]

Thanks for your prompt reply.
We tried version 4.5 of lens studio, built and submitted.
However, we found that another issue.
if the webcam is rotated by clockwise 90deg, v4.5 lens studio cannot recognize face while v5 can.
Our webcam is 1920x1080 in native, the lens studio shows it as landscape only.
Is there anyway to make lens studio take the webcam in 1080x1920, instead of 1920x1080.

[ptrumpis]

Could this be related to the rotation mode?
https://developers.snap.com/lens-studio/4.55.1/references/guides/lens-features/tracking/world/tracking-modes#using-rotation-mode

[appSimfusion]

I cannot repack the lens download from lens studio 4.55.1 after I change all blendmode 16. Should I use even older lens studio version?

lens.zip

  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\qt\main_widget.py", line 95, in onRepackButtonClicked
    self.packer.pack(folder, outputPath)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\core\lens_packer.py", line 18, in pack
    self._dir_to_resources(input_dir)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\core\lens_packer.py", line 63, in _dir_to_resources
    xml_to_resource(xml_file, resource_file)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\tools\resource_tool.py", line 182, in xml_to_resource
    _xml_to_resource_rec(serializer, child)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\tools\resource_tool.py", line 101, in _xml_to_resource_rec
    _xml_to_resource_rec(serializer, child)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\tools\resource_tool.py", line 101, in _xml_to_resource_rec
    _xml_to_resource_rec(serializer, child)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\tools\resource_tool.py", line 101, in _xml_to_resource_rec
    _xml_to_resource_rec(serializer, child)
  [Previous line repeated 2 more times]
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\tools\resource_tool.py", line 169, in _xml_to_resource_rec
    serializer.write_string_array(key, arr)
  File "D:\Brian\snap-lens-tool-master\snap-lens-tool-master\src\common\serializer\resource_serializer.py", line 63, in write_string_array
    self.array_writer.write_uint32(len(string))
                                   ^^^^^^^^^^^
TypeError: object of type 'NoneType' has no len()`

[ptrumpis]

You could try version 4.36.1.

It was the last release before the shutdown and there should be no blendmode 16 in this version.
So unpacking and repacking should not be necessary.