Notebook gets loaded and dont work

[deepu2010]

I have followed all the steps and I have got C# kernel in my notebook, but my notebook is getting loaded and not working. No error message is also getting displayed

[gyurisc]

@deepu2010 can you please send me your notebook that you are trying to load?

[deepu2010]

@gyurisc these are the script commands generated....

[W 06:54:49.284 NotebookApp] Error loading kernelspec 'csharp'
Traceback (most recent call last):
File "N:\Anaconda\lib\site-packages\jupyter_client\kernelspec.py", line 258, in get_all_specs
spec = self.get_kernel_spec_by_name(kname, resource_dir)
File "N:\Anaconda\lib\site-packages\jupyter_client\kernelspec.py", line 201, in get_kernel_spec_by_name
return self.kernel_spec_class.from_resource_dir(resource_dir)
File "N:\Anaconda\lib\site-packages\jupyter_client\kernelspec.py", line 47, in from_resource_dir
kernel_dict = json.load(f)
File "N:\Anaconda\lib\json_init.py", line 299, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "N:\Anaconda\lib\json_init.py", line 354, in loads
return _default_decoder.decode(s)
File "N:\Anaconda\lib\json\decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "N:\Anaconda\lib\json\decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Invalid \escape: line 2 column 17 (char 18)
[I 06:54:50.405 NotebookApp] Kernel started: 7c30099c-6ee1-442b-8171-ee77caf7cbb7
[W 06:54:50.650 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20181212065415 (::1) 106.94ms referer=http://localhost:8888/notebooks/Untitled.ipynb?kernel_name=icsharpkernel
[W 06:55:50.539 NotebookApp] Timeout waiting for kernel_info reply from 7c30099c-6ee1-442b-8171-ee77caf7cbb7
[I 06:56:49.776 NotebookApp] Saving file at /Untitled.ipynb

[deepu2010]

[deepu2010]

@gyurisc I'm getting to know that, my kernel is connected but my notebook keeps on loading........so I cant work further. Thanks

[gyurisc]

What happens if you just start a brand new notebook with one a single line of code:

Console.WriteLine("Hello!");

Does that work?

[deepu2010]

Hi, When I start a new kernel, I get the kernel connected but my page is still loading.......I mean I could see a waiting symbol on my page header. If I type any commands on the notebook, the cell keeps on loading with a '*' symbol. I'm not able to proceed further

…

On Thu, Dec 13, 2018 at 8:13 AM gyurisc ***@***.***> wrote: What happens if you just start a brand new notebook with one a single line of code: Console.WriteLine("Hello!"); Does that work? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#5 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AjVVucb3_hynLf4N1iPgSIvegBQ_yFfIks5u4nyZgaJpZM4ZOskB> .

[gyurisc]

@deepu2010 I tried this and seeing it too. I will try to figure out what is going on and will get back to you.

[gyurisc]

It seems that the whole Roslyn thing is not working. I am seeing this error that is logged against the Roslyn library.

dotnet/roslyn#28506

Trying to figure this out...

[gyurisc]

I think I managed to fix this. Please, do a git pull and clean your build and the recompile to the whole project and hit F5 with Visual Studio. If you need a pre-built package then let me know!

Thanks for reporting this issue. Really, appreciate it...

[gyurisc]

added a new release just in case

[deepu2010]

Hi Gyurisc,

The rebuild was successful, however after launching my notebook, I'm facing 'Kernel Error'. Am I missing something here? Please look into this issue, thank you.

Error messages:
Traceback (most recent call last):
File "N:\Anaconda\lib\site-packages\tornado\web.py", line 1543, in _execute
result = yield result
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1099, in run
value = future.result()
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "N:\Anaconda\lib\site-packages\notebook\services\sessions\handlers.py", line 73, in post
type=mtype))
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1099, in run
value = future.result()
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "N:\Anaconda\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 79, in create_session
kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1099, in run
value = future.result()
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1107, in run
yielded = self.gen.throw(*exc_info)
File "N:\Anaconda\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 92, in start_kernel_for_session
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 1099, in run
value = future.result()
File "N:\Anaconda\lib\site-packages\tornado\gen.py", line 315, in wrapper
yielded = next(result)
File "N:\Anaconda\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 160, in start_kernel
super(MappingKernelManager, self).start_kernel(**kwargs)
File "N:\Anaconda\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
km.start_kernel(**kwargs)
File "N:\Anaconda\lib\site-packages\jupyter_client\manager.py", line 259, in start_kernel
**kw)
File "N:\Anaconda\lib\site-packages\jupyter_client\manager.py", line 204, in _launch_kernel
return launch_kernel(kernel_cmd, **kw)
File "N:\Anaconda\lib\site-packages\jupyter_client\launcher.py", line 128, in launch_kernel
proc = Popen(cmd, **kwargs)
File "N:\Anaconda\lib\subprocess.py", line 709, in init
restore_signals, start_new_session)
File "N:\Anaconda\lib\subprocess.py", line 997, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

[gyurisc]

@deepu2010 There is a log file (shell.log) in the same directory where your notebook is. Can you please send me that log file?

[gyurisc]

@deepu2010 and I wish you a Merry Christmas! :)