No directory exists at 'electrum/www'

[sime]

Following the docs on How to accept Bitcoin on a website using Electrum fails at rendering the payserver due to the www directory missing.

Interestingly, extracting Electrum-4.0.9.tar.gz, the electrum-http contents and be found in Electrum-4.0.9/electrum/www

Steps to reproduce:

/Applications/Electrum.app/Contents/MacOS/run_electrum -o setconfig payserver_address localhost:2029
/Applications/Electrum.app/Contents/MacOS/run_electrum daemon -v=warning

Output

I | logging | Electrum version: 4.0.9 - https://electrum.org - https://github.com/spesmilo/electrum
I | logging | Python version: 3.7.9 (default, Sep 11 2020, 17:18:37)
[Clang 11.0.0 (clang-1100.0.33.17)]. On platform: Darwin-19.6.0-x86_64-i386-64bit
I | logging | Logging to file: None
I | logging | Log filters: verbosity 'warning', verbosity_shortcuts ''
E | daemon.PayServer | Exception in run: ValueError("No directory exists at '/Applications/Electrum.app/Contents/Resources/electrum/www'")
Traceback (most recent call last):
  File "aiohttp/web_urldispatcher.py", line 553, in __init__
ValueError: Not a directory

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "electrum/util.py", line 1056, in wrapper
  File "electrum/daemon.py", line 341, in run
  File "aiohttp/web_app.py", line 333, in add_routes
  File "aiohttp/web_urldispatcher.py", line 1213, in add_routes
  File "aiohttp/web_routedef.py", line 100, in register
  File "aiohttp/web_urldispatcher.py", line 1126, in add_static
  File "aiohttp/web_urldispatcher.py", line 555, in __init__
ValueError: No directory exists at '/Applications/Electrum.app/Contents/Resources/electrum/www'

Similar error on Linux for a pip installed electrum instance

I | logging | Electrum version: 4.0.9 - https://electrum.org - https://github.com/spesmilo/electrum
I | logging | Python version: 3.6.9 (default, Jan 26 2021, 15:33:00)
[GCC 8.4.0]. On platform: Linux-5.9.6-x86_64-linode139-x86_64-with-Ubuntu-18.04-bionic
I | logging | Logging to file: None
I | logging | Log filters: verbosity 'warning', verbosity_shortcuts ''
E | daemon.PayServer | Exception in run: ValueError("No directory exists at '/root/.local/lib/python3.6/site-packages/electrum/www'",)
Traceback (most recent call last):
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_urldispatcher.py", line 553, in __init__
    raise ValueError("Not a directory")
ValueError: Not a directory

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/root/.local/lib/python3.6/site-packages/electrum/util.py", line 1056, in wrapper
    return await func(*args, **kwargs)
  File "/root/.local/lib/python3.6/site-packages/electrum/daemon.py", line 341, in run
    app.add_routes([web.static(root, os.path.join(os.path.dirname(__file__), 'www'))])
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_app.py", line 333, in add_routes
    return self.router.add_routes(routes)
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_urldispatcher.py", line 1213, in add_routes
    registered_routes.extend(route_def.register(self))
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_routedef.py", line 100, in register
    resource = router.add_static(self.prefix, self.path, **self.kwargs)
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_urldispatcher.py", line 1126, in add_static
    append_version=append_version,
  File "/root/.local/lib/python3.6/site-packages/aiohttp/web_urldispatcher.py", line 555, in __init__
    raise ValueError(f"No directory exists at '{directory}'") from error
ValueError: No directory exists at '/root/.local/lib/python3.6/site-packages/electrum/www'