Yes, plaster and plaster_pastedeploy are installed in the virtual 
environment. I have checked it through pip list | grep plaster and the 
installed packaged in PyCharm: both of them show plaster and 
plaster_pastedeploy are installed.

Thanks.
On Friday, September 10, 2021 at 1:16:19 AM UTC+12 [email protected] wrote:

> Do you have plaster_pastedeploy installed?
>
> - Michael
>
> On Sep 9, 2021, at 02:28, Simon <[email protected]> wrote:
>
> 
>
> Hi there,
>
> I got an error about 'could not find a matching loader for the scheme' 
> when I want to run my Pyramid web app in PyCharm based on Pyramid server. 
> However, if I directly run pserve myapp.ini in terminal, it can launch my 
> web app locally. I have edit the configuration in PyCharm: the config file 
> is pointed to myapp.ini and the Python interpreter is pointed to python in 
> the virtual environment.
>
> Traceback (most recent call last):
>   File 
> "/Applications/PyCharm.app/Contents/plugins/python/helpers/pycharm/pycharm_load_entry_point.py",
>  
> line 12, in <module>
>     sys.exit(f())
>   File 
> "/Users/simon/Documents/venv/lib/python3.6/site-packages/pyramid/scripts/pserve.py",
>  
> line 34, in main
>     return command.run()
>   File 
> "/Users/simon/Documents/venv/lib/python3.6/site-packages/pyramid/scripts/pserve.py",
>  
> line 193, in run
>     loader = self._get_config_loader(config_uri)
>   File 
> "/Users/simon/Documents/venv/lib/python3.6/site-packages/pyramid/scripts/common.py",
>  
> line 23, in get_config_loader
>     return plaster.get_loader(config_uri, protocols=['wsgi'])
>   File 
> "/Users/simon/Documents/venv/lib/python3.6/site-packages/plaster/loaders.py", 
> line 109, in get_loader
>     raise LoaderNotFound(requested_scheme, protocols=protocols)
> plaster.exceptions.LoaderNotFound: Could not find a matching loader for 
> the scheme "file+ini ", protocol "wsgi".
>
> Process finished with exit code 1
>
>
> Though I go to the official website about plaster and WSGI, I still cannot 
> figure it out. \
>
> Do anyone have any suggestion or have any similar problem when configuring 
> Pyramid web app in PyCharm?
>
> Thanks.
>
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