Error examples.tour in h2o Wave

[sergiomora03]

Wave SDK Version, OS

I´have v0.10.0 Wave, windows:

wave-0.10.0-windows-amd64.tar.gz

Actual behavior

I run wave run --no-reload examples.tour from wave/docs/tour and get this error:

Error

Traceback (most recent call last):
  File "c:\users\samora\anaconda3\lib\site-packages\h2o_wave\server.py", line 265, in _process
    await self._handle(q)
  File ".\examples\tour.py", line 193, in serve
    await show_example(q, catalog[route])
  File ".\examples\tour.py", line 162, in show_example
    await active_example.start()
  File ".\examples\tour.py", line 43, in start
    self.process = await asyncio.create_subprocess_exec(
  File "c:\users\samora\anaconda3\lib\asyncio\subprocess.py", line 236, in create_subprocess_exec
    transport, protocol = await loop.subprocess_exec(
  File "c:\users\samora\anaconda3\lib\asyncio\base_events.py", line 1630, in subprocess_exec
    transport = await self._make_subprocess_transport(
  File "c:\users\samora\anaconda3\lib\asyncio\base_events.py", line 491, in _make_subprocess_transport
    raise NotImplementedError
NotImplementedError

from http://localhost:10101/tour page.

Expected behavior

At least interact with:

Steps To Reproduce

1. Download wave-0.10.0-windows-amd64.tar.gz
2. Excecute waved.exe
3. run pip install -r examples/requirements.txt
4. run wave run --no-reload examples.tour
5. Go to http://localhost:10101/tour
6. Get the error.

[lo5]

@sergiomora03 Thanks for reporting!

Duplicates #397

[sugatoray]

Same. Problem. Tried twice now. Exactly same error on Windows 10. 🔥🔥🔥

Followed the steps from here: https://h2oai.github.io/wave/docs/tour

Wave Assest: wave-0.10.0-windows-amd64.tar.gz

System Specs:

• Platform: Windows 10
  • Version: 2004
  • Build: 19041.X
• Python: 3.7

Attempt Specs:

I got the same error in both of the following cases.

1. Attempt-1: conda + WITHOUT venv

   ## I preferred to keep the entire installation 
   ## separate from my other work-stuff
   conda env create -n h2owave_env python=3.7 -y
   conda activate h2owave_env
   cd $HOME\wave
   
   
   ## Skip using venv
   # python3 -m venv venv
   # venv\Scripts\activate.bat
   
   ## Install requirements
   pip install -r examples\requirements.txt

   Installation was successful and the server was started without any error.

2. Attempt-2: conda + WITH venv

   ## I preferred to keep the entire installation 
   ## separate from my other work-stuff
   conda env create -n h2owave_env python=3.7 -y
   conda activate h2owave_env
   cd $HOME\wave
   
   ## Use venv
   python3 -m venv venv
   venv\Scripts\activate.bat
   
   ## Install requirements
   pip install -r examples\requirements.txt

   Installation was successful and the server was started without any error.

Error

(venv) (h2owave_env) C:\Users\raysu\wave>wave run --no-reload examples.tour
----------------------------------------
 Welcome to the H2O Wave Interactive Tour!

 Go to http://localhost:10101/tour
----------------------------------------
←[32mINFO←[0m:     Started server process [←[36m10776←[0m]
←[32mINFO←[0m:     Waiting for application startup.
←[32mINFO←[0m:     Application startup complete.
←[32mINFO←[0m:     Uvicorn running on ←[1mhttp://127.0.0.1:8000←[0m (Press CTRL+C to quit)
←[32mINFO←[0m:     127.0.0.1:51192 - "←[1mPOST / HTTP/1.1←[0m" ←[32m200 OK←[0m
Unhandled exception
Traceback (most recent call last):
  File "c:\users\raysu\wave\venv\lib\site-packages\h2o_wave\server.py", line 265, in _process
    await self._handle(q)
  File ".\examples\tour.py", line 193, in serve
    await show_example(q, catalog[route])
  File ".\examples\tour.py", line 162, in show_example
    await active_example.start()
  File ".\examples\tour.py", line 44, in start
    sys.executable, os.path.join(example_dir, self.filename)
  File "C:\Users\raysu\Miniconda3\envs\h2owave_env\lib\asyncio\subprocess.py", line 217, in create_subprocess_exec
    stderr=stderr, **kwds)
  File "C:\Users\raysu\Miniconda3\envs\h2owave_env\lib\asyncio\base_events.py", line 1544, in subprocess_exec
    bufsize, **kwargs)
  File "C:\Users\raysu\Miniconda3\envs\h2owave_env\lib\asyncio\base_events.py", line 462, in _make_subprocess_transport
    raise NotImplementedError
NotImplementedError

[lo5]

Thanks for your patience - there's a workaround posted here until we get the next release out: #397 (comment)

[sergiomora03]

For me do not work.
Now, I get this error:

Traceback (most recent call last):
  File "C:\Users\samora\OneDrive - Politécnico Grancolombiano\Poli\1 - Proyects\7. CRM\temp\wave\examples\hello_world.py", line 5, in <module>
    from h2o_wave import site, ui
  File "c:\users\samora\anaconda3\lib\site-packages\h2o_wave\__init__.py", line 18, in <module>
    from .core import Site, AsyncSite, site, Page, Ref, data, pack, Expando, expando_to_dict, clone_expando, copy_expando
  File "c:\users\samora\anaconda3\lib\site-packages\h2o_wave\core.py", line 9, in <module>
    import httpx
  File "c:\users\samora\anaconda3\lib\site-packages\httpx\__init__.py", line 2, in <module>
    from ._api import delete, get, head, options, patch, post, put, request, stream
  File "c:\users\samora\anaconda3\lib\site-packages\httpx\_api.py", line 3, in <module>
    from ._client import Client, StreamContextManager
  File "c:\users\samora\anaconda3\lib\site-packages\httpx\_client.py", line 7, in <module>
    import httpcore
  File "c:\users\samora\anaconda3\lib\site-packages\httpcore\__init__.py", line 2, in <module>
    from ._async.connection_pool import AsyncConnectionPool
  File "c:\users\samora\anaconda3\lib\site-packages\httpcore\_async\connection_pool.py", line 2, in <module>
    from ssl import SSLContext
  File "c:\users\samora\anaconda3\lib\ssl.py", line 98, in <module>
    import _ssl             # if we can't import it, let the error propagate
ImportError: DLL load failed while importing _ssl: No se puede encontrar el módulo especificado.

Maybe I made a mistake copying the code?

[gonfernandez]

Same issue as @sergiomora03 here.

[lo5]

Looks like the second error is related to Conda/Pycharm installation/configuration: https://www.google.com/search?q=ImportError%3A+DLL+load+failed+while+importing+_ssl, unrelated to the h2o-wave module.

[anthony-demaio]

I'm experiencing the same issue with wave-0.12.1 on Windows. I tried the workaround, and replaced the tour.py file with the one linked, and it did not resolve the issue.

When I go to localhost:10101/tour as instructed in the documentation, I get 404 page not found error.

[lo5]

@anthony-demaio That sounds like a different problem.There are two separate problems reported in this issue: NotImplementedError and ImportError: DLL load failed while importing _ssl.

You reported "404 page not found", which does not look like it originated from waved (waved does not display 404 for any URL). Are you sure the waved daemon is running?