Solved This application failed to start because no Qt platform plugin could be initialized.
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Hi I am getting this error and dont understand why
QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/.conda/envs/ds2/Library/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "C:/Users/.conda/envs/ds2/Library/plugins/platforms/qdirect2d.dll"
Found invalid metadata in lib C:/Users/.conda/envs/ds2/Library/plugins/platforms/qdirect2d.dll: Invalid metadata version
"Failed to extract plugin meta data from 'C:/Users/.conda/envs/ds2/Library/plugins/platforms/qdirect2d.dll'"
not a plugin
QFactoryLoader::QFactoryLoader() looking at "C:/Users/.conda/envs/ds2/Library/plugins/platforms/qminimal.dll"
Found invalid metadata in lib C:/Users/.conda/envs/ds2/Library/plugins/platforms/qminimal.dll: Invalid metadata version
"Failed to extract plugin meta data from 'C:/Users/.conda/envs/ds2/Library/plugins/platforms/qminimal.dll'"
not a plugin
QFactoryLoader::QFactoryLoader() looking at "C:/Users/.conda/envs/ds2/Library/plugins/platforms/qoffscreen.dll"
Found invalid metadata in lib C:/Users/.conda/envs/ds2/Library/plugins/platforms/qoffscreen.dll: Invalid metadata version
"Failed to extract plugin meta data from 'C:/Users/.conda/envs/ds2/Library/plugins/platforms/qoffscreen.dll'"
not a plugin
QFactoryLoader::QFactoryLoader() looking at "C:/Users/.conda/envs/ds2/Library/plugins/platforms/qwindows.dll"
Found invalid metadata in lib C:/Users/.conda/envs/ds2/Library/plugins/platforms/qwindows.dll: Invalid metadata version
"Failed to extract plugin meta data from 'C:/Users/.conda/envs/ds2/Library/plugins/platforms/qwindows.dll'"
not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/.conda/envs/ds2/platforms" ...
qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.I created a env with 3.9 python installed the pyside6 and run the application and works fine, but after I installed jupyter notebook in this env then I get this error, and I dont get why.
Thanks in advance.
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There's your issue. You have multiple installation of Qt as well doing so.
I do not think PySide6 is already available on conda but you have PySide2 that is.
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Hi and welcome to devnet,
Can you check where the plugins are loaded from with your original environment ?
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@SGaist I manage to find the difference it changes the plugin folder location, one is C:\Users.conda\envs\gui\Lib\site-packages\PySide6\plugins the one that works correctly, and the other is on C:\Users.conda\envs\test\Library\plugins
I replaced the folders that were invalid but I dont know if this is the appropiate solution? It runs now appropiate but I dont know if I begin using other things this will break again.Do you know how to redirect the path for this? Thanks!
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That's the kind of manipulation that should not be needed.
I would try using a clean environment just to be sure everything works appropriately.
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@SGaist said in This application failed to start because no Qt platform plugin could be initialized.:
I would try using a clean environment just to be sure everything
I have created multiple env for testing this, and some of the python packages mess with this, matplotlib and jupyter are some examples, they change that particular path, what can I do to correct this without manipulating the files?
Thanks!
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Are they coming from different channels ?
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@SGaist I am not sure I understand what you are asking, but I am using anaconda/conda for creating different envs, and on each new env when I install via pip install pyside6 qt works fine, but then I begin installing other packages via conda install such as matplotlib and jupyter notebook, and here is where the error appears.
I hope with that I answer the question,
Thanks!
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There's your issue. You have multiple installation of Qt as well doing so.
I do not think PySide6 is already available on conda but you have PySide2 that is.
