Hi Again,
I reinstalled R; now both R and Julia kernels give the same error "error
installing kernel unhandled error, unhandled error"; details are below
[I 2022-07-26 09:21:24.106 ServerApp] Creating new notebook in
/Documents/EK EsawiPD/Scripts
[E 2022-07-26 09:21:25.228 ServerApp] Failed to run command:
['C:/PROGRA~1/R/R-41~1.0/bin/x64/R', '--slave', '-e',
'IRkernel::main()', '--args',
'C:\\Users\\eesawi\\AppData\\Roaming\\jupyter\\runtime\\kernel-04406fc5-9a32-453f-bf4b-f5dd9ed82505.json']
PATH='C:\\Program Files (x86)\\Razer Chroma SDK\\bin;C:\\Program
Files\\Razer Chroma SDK\\bin;C:\\Program Files
(x86)\\Razer\\ChromaBroadcast\\bin;C:\\Program
Files\\Razer\\ChromaBroadcast\\bin;C:\\Program Files (x86)\\Common
Files\\Oracle\\Java\\javapath;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Program
Files (x86)\\Intel\\Intel(R) Management Engine Components\\DAL;C:\\Program
Files\\Intel\\Intel(R) Management Engine
Components\\DAL;C:\\Users\\eesawi\\AppData\\Local\\Programs\\Python\\Python35;C:\\Users\\eesawi\\AppData\\Local\\Programs\\Python\\Python35\\Scripts;C:\\Program
Files\\Git\\cmd;C:\\WINDOWS\\system32\\config\\systemprofile\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Users\\eesawi\\AppData\\Local\\Programs\\Microsoft
VS
Code\\bin;C:\\Users\\eesawi\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Users\\eesawi\\AppData\\Local\\Programs\\Python\\Python39\\Scripts;C:\\Users\\eesawi\\AppData\\Local\\atom\\bin;%USERPROFILE%\\AppData\\Local\\Microsoft\\WindowsApps;'
with kwargs:
{'stdin': -1, 'stdout': None, 'stderr': None, 'cwd':
'C:\\Users\\eesawi\\Documents\\EK EsawiPD\\Scripts', 'close_fds': False}
[E 2022-07-26 09:21:25.228 ServerApp] Uncaught exception POST
/api/sessions?1658852485196 (127.0.0.1)
HTTPServerRequest(protocol='http', host='localhost:8888',
method='POST', uri='/api/sessions?1658852485196', version='HTTP/1.1',
remote_ip='127.0.0.1')
Traceback (most recent call last):
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\tornado\web.py",
line 1704, in _execute
result = await result
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_server\services\sessions\handlers.py",
line 67, in post
model = await sm.create_session(
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_server\services\sessions\sessionmanager.py",
line 91, in create_session
kernel_id = await self.start_kernel_for_session(session_id, path,
name, type, kernel_name)
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_server\services\sessions\sessionmanager.py",
line 99, in start_kernel_for_session
kernel_id = await
self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_server\services\kernels\kernelmanager.py",
line 187, in start_kernel
kernel_id = await
ensure_async(self.pinned_superclass.start_kernel(self, **kwargs))
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_server\utils.py",
line 172, in ensure_async
result = await obj
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_client\multikernelmanager.py",
line 483, in start_kernel
await fut
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_client\multikernelmanager.py",
line 460, in _add_kernel_when_ready
await kernel_awaitable
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_client\manager.py",
line 661, in start_kernel
self.kernel = await self._launch_kernel(kernel_cmd, **kw)
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_client\manager.py",
line 642, in _launch_kernel
res = launch_kernel(kernel_cmd, **kw)
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\site-packages\jupyter_client\launcher.py",
line 132, in launch_kernel
proc = Popen(cmd, **kwargs)
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\subprocess.py",
line 951, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File
"c:\users\eesawi\appdata\local\programs\python\python39\lib\subprocess.py",
line 1420, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file
specified
[W 2022-07-26 09:21:25.468 ServerApp] Unhandled error
[E 2022-07-26 09:21:25.471 ServerApp] {
"Host": "localhost:8888",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:96.0)
Gecko/20100101 Firefox/96.0",
"Accept": "*/*",
"Accept-Language": "en-US,en;q=0.5",
"Accept-Encoding": "gzip, deflate",
"Referer":
"http://localhost:8888/lab/tree/Documents/EK%20EsawiPD/Scripts/Untitled2.ipynb";,
"Content-Type": "text/plain;charset=UTF-8",
"Authorization": "token
c2471bb8fc507afe67c6e214fea4d923bdf1ab74b4baea3d",
"X-Xsrftoken":
"2|6bc60900|7dac534b086993b020c27c66807bdf22|1658266876",
"Origin": "http://localhost:8888";,
"Content-Length": "142",
"Connection": "keep-alive",
"Cookie":
"_xsrf=2|6bc60900|7dac534b086993b020c27c66807bdf22|1658266876;
username-localhost-8888=\"2|1:0|10:1658852485|23:username-localhost-8888|44:MzM3NGU2MzM4YzcxNDI4YWE2ZTExYzQ4ZTk4OWRiNzY=|6e9df3938d5b32de3b028e7120e94b3b1ecc08d227f15b2c96c0e1804a6329b0\"",
"Sec-Fetch-Dest": "empty",
"Sec-Fetch-Mode": "cors",
"Sec-Fetch-Site": "same-origin",
"Pragma": "no-cache",
"Cache-Control": "no-cache"
}
[E 2022-07-26 09:21:25.474 ServerApp] 500 POST /api/sessions?1658852485196
(127.0.0.1) 273.75ms
referer=http://localhost:8888/lab/tree/Documents/EK%20EsawiPD/Scripts/Untitled2.ipynb
On Monday, July 25, 2022 at 6:04:12 PM UTC-7 Ek Esawi wrote:
> Kevin,
>
>
>
> Thank you so much for your help. The name issue makes sense now. The issue
> with the R kernel is that it doesn’t generate any errors. It just simply
> will not run the code and suddenly, instead of the active kernel is R,
> changes to no kernel.
>
>
>
> Julia, on the other hand, generates messages but I don’t understand them
> and don’t want to post the whole page of messages because it may not be
> appropriate to do so. Here are the listed kernels
>
> Available kernels:
>
> ir C:\Users\eesawi\AppData\Roaming\jupyter\kernels\ir
>
> julia-1.7 C:\Users\eesawi\AppData\Roaming\jupyter\kernels\julia-1.7
>
> python3
> c:\users\eesawi\appdata\local\programs\python\python39\share\jupyter\kernels\python3
>
> I looked at each kernel json file, but I don’t know how to change them to
> run the kernels properly.
>
> Here are the 2 json files
>
> {
>
> "argv": ["C:/PROGRA~1/R/R-41~1.0/bin/x64/R", "--slave", "-e",
> "IRkernel::main()", "--args", "{connection_file}"],
>
> "display_name": "R",
>
> "language": "R"
>
> }
>
>
>
> {
>
> "display_name": "Julia 1.7.3",
>
> "interrupt_mode": "message",
>
> "argv": [
>
>
> "C:\\Users\\eesawi\\Downloads\\julia-1.7.3-win32\\julia-1.7.3\\bin\\julia.exe",
>
> "-i",
>
> "--color=yes",
>
> "--project=@.",
>
> "C:\\Users\\eesawi\\.julia\\packages\\IJulia\\AQu2H\\src\\kernel.jl",
>
> "{connection_file}"
>
> ],
>
> "env": {},
>
> "language": "julia"
>
> }
>
>
> EK
>
> On Mon, Jul 25, 2022 at 5:06 PM Kevin Bates <kba...@gmail.com> wrote:
>
>> Hello EK.
>>
>> The ".ipynb" extension is not meant to indicate the type of kernel to
>> which the notebook file is associated, it's purely an indicator that this
>> is a Jupyter notebook and is more a function of the project having been
>> originally named IPython. Had the project been named Jupyter from the
>> start, I imagine the extension would have been ".jnb".
>>
>> I suspect your R and Julia kernels are not correctly configured since it
>> appears the server knows about them (as they are selectable) but is
>> encountering an error during their startup. I recommend looking at your
>> server's console (where the Lab instance was started) since there should be
>> some information specific to the failed start attempts. You probably have
>> some additional dependencies missing. You will likely need to look at the
>> `argv` stanza of the `kernel.json` file associated with your R and/or Julia
>> kernels since that is the command that is issued to start each kernel.
>>
>> Lastly, if you would like to change your "default" kernel, you can
>> configure 'MappingKernelManager.default_kernel_name=julia'. This can be
>> done within a configuration file via
>> 'c.MappingKernelManager.default_kernel_name=julia' or the command line via
>> '--MappingKernelManager.default_kernel_name=julia'. Note that I'm not
>> familiar with the Julia kernel or its default naming but am assuming its
>> configuration resides in the directory named 'julia' - which is the target
>> of the 'default_kernel_name' attribute I reference and where its
>> aforementioned `kernel.json` file will reside.
>>
>> Note that the directories for where the `kernel.json` files reside can be
>> found using `jupyter kernelspec list` and (for completeness) the left-hand
>> values of that output is the string that should be referenced in the
>> 'default_kernel_name' configuration option.
>>
>> Best regards,
>> Kevin.
>>
>> On Monday, July 25, 2022 at 2:22:20 PM UTC-7 esa...@gmail.com wrote:
>>
>>> Hi all--
>>>
>>> I installed Jupyterlab with python3 and kernels installed. I added Julia
>>> kernel. Now, every time i open a new notebook, the file automatically
>>> given ipynb extension. When i change the kernel to R, the code does not run
>>> and the kernel on top right changes to no kernel and defaults back to
>>> Python3.
>>>
>>> If i chose Julia kernel, i get this error "error starting kernel,
>>> unhandled error"
>>>
>>> Any input is highly appreciated.
>>>
>>> EK
>>>
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>> .
>>
>
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