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Plugin won't load in QGIS 3.16 #140

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e42mercury opened this issue Nov 23, 2020 · 10 comments
Closed

Plugin won't load in QGIS 3.16 #140

e42mercury opened this issue Nov 23, 2020 · 10 comments

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@e42mercury
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I can't load the plugin on mac OS with QGIS 3.16. I get the following error:

Couldn't load plugin 'qgis-maptiler-plugin' due to an error when calling its classFactory() method 

ImportError: dlopen(/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so, 2): Library not loaded: /opt/X11/lib/libxcb.1.dylib   Referenced from: /Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so   Reason: image not found 
Traceback (most recent call last):
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 334, in _startPlugin
    plugins[packageName] = package.classFactory(iface)
  File "/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgis-maptiler-plugin/__init__.py", line 35, in classFactory
    from .maptiler import MapTiler
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgis-maptiler-plugin/maptiler.py", line 34, in 
    from .browser_root_collection import DataItemProvider
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgis-maptiler-plugin/browser_root_collection.py", line 7, in 
    from .browser_mapitem import MapDataItem
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgis-maptiler-plugin/browser_mapitem.py", line 11, in 
    from .gl2qgis import converter
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/qgis-maptiler-plugin/gl2qgis/converter.py", line 19, in 
    from PIL import Image
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/Image.py", line 94, in 
    from . import _imaging as core
  File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 792, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ImportError: dlopen(/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so, 2): Library not loaded: /opt/X11/lib/libxcb.1.dylib
  Referenced from: /Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so
  Reason: image not found


Python version: 3.7.7 (default, Sep 22 2020, 10:25:18) [Clang 12.0.0 (clang-1200.0.32.2)] 
QGIS version: 3.16.0-Hannover Hannover, 4af1cbfb97 

Python Path:
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/leastcostpath
/Applications/QGIS.app/Contents/MacOS/../Resources/python
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins
/Applications/QGIS.app/Contents/MacOS/../Resources/python/plugins
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/netCDF4-1.5.3-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/pandas-1.1.0-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/affine-2.3.0-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/lib-dynload
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/snuggs-1.4.7-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Rtree-0.9.4-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/numba-0.50.1-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/pyproj-2.6.0-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/click_plugins-1.1.1-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/statsmodels-0.11.1-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/scipy-1.5.1-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/numpy-1.19.1-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/rasterio-1.1.5-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/GDAL-3.1.2-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/patsy-0.5.1-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/cftime-1.2.1-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/matplotlib-3.3.0-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/opencv_contrib_python-4.3.0.36-py3.7-macosx-10.13.0-x86_64.egg
/Applications/QGIS.app/Contents/MacOS/lib/python37.zip
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/geopandas-0.8.1-py3.7.egg
/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Fiona-1.8.13.post1-py3.7-macosx-10.13.0-x86_64.egg
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/DigitizingTools/tools
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/DigitizingTools
/Users/erik/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/mmqgis/forms
@lazaa32
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lazaa32 commented Nov 24, 2020

Hi @e42mercury,

it looks like an issue with Python Pillow library. How did you install it? Can you try to upgrade it to the latest version? That might help.

@e42mercury
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The 3.16.1 mac build is not available from the download page. I tried with the nightly build of 3.17.0 and got the same result.
I wonder if this is because I'm still using macOS 10.13.

@lazaa32
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lazaa32 commented Nov 30, 2020

I meant upgrade of Python Pillow library. I can see that you have version 7.2.0:

ImportError: dlopen(/Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so, 2): Library not loaded: /opt/X11/lib/libxcb.1.dylib   Referenced from: /Applications/QGIS.app/Contents/MacOS/lib/python3.7/site-packages/Pillow-7.2.0-py3.7-macosx-10.13.0-x86_64.egg/PIL/_imaging.cpython-37m-darwin.so   Reason: image not found 
Traceback (most recent call last):

But the latest version is 8.0.1.
Could you try to upgrade this library?

@e42mercury
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I upgraded pip and pillow (following these instructions), which worked. But QGIS is still using the old version (inside the application contents). Do I need to reinstall QGIS? Do you know how I can get get QGIS to use the new versions?

@lazaa32
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lazaa32 commented Dec 1, 2020

Sorry, I am not familiar with package and library management on OSX. Do you know how did you get the old version installed? I would try first to reinstall QGIS, if that doesn't help I would try to modify Python path and remove path to the old version and make sure that there is a path to latest version of Pillow.

@michaelrnz
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It seems that those packages are actually wrapped up in the macOS release of QGIS if I am reading it right. I'm hitting the same issue, not a massive macOS person so i'm guessing at it. I got the issue on Catalina and Big Sur as of 3.16+. It seems we might need to raise this with the QGIS macOS maintainers?

@lazaa32
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lazaa32 commented Dec 1, 2020

Hi @michaelrnz ,
you are probably right. I just ran into this blogpost: https://www.lutraconsulting.co.uk/blog/2020/10/01/qgis-macos-package/
Guys from Lutra are really QGIS experts so I believe they can give you a hint.

@michaelrnz
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michaelrnz commented Dec 1, 2020 •
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@lazaa32 You just saved my bacon, I just ran the following and then was able to launch QGIS and the MapTiler plugin with no worries! That article provided the answer 👍

/Applications/QGIS.app/Contents/MacOS/bin/pip3 install pillow -U
Collecting pillow
  Downloading Pillow-8.0.1-cp37-cp37m-macosx_10_10_x86_64.whl (2.2 MB)
     |████████████████████████████████| 2.2 MB 4.8 MB/s 
Installing collected packages: pillow
  Attempting uninstall: pillow
    Found existing installation: Pillow 7.2.0
    Uninstalling Pillow-7.2.0:
      Successfully uninstalled Pillow-7.2.0
Successfully installed pillow-8.0.1

@lazaa32
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lazaa32 commented Dec 1, 2020

Oh, that's great! Thanks @michaelrnz for feedback and working solution.
@e42mercury please let me know if this works for you as well.

@lazaa32 lazaa32 mentioned this issue Dec 2, 2020
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@e42mercury e42mercury mentioned this issue Dec 2, 2020
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@e42mercury
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Yes, this solution worked great for me! @lazaa32 and @michaelrnz, thanks so much. Now I can get back to using this great plugin. I opened an issue about this so hopefully the QGIS people will include the pillow update in the next release.

@lazaa32 lazaa32 closed this as completed Dec 3, 2020
@lazaa32 lazaa32 mentioned this issue Jan 11, 2021
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@wilhelmberg wilhelmberg mentioned this issue Feb 23, 2021
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@lazaa32 lazaa32 mentioned this issue May 3, 2021
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@fso42 fso42 mentioned this issue Jul 6, 2022
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@michaelrnz @lazaa32 @e42mercury