Failed to start the Kernel - jupyter-notebook

I am quite new to this, I tried using Jupyter(on VS code) in one of the folders and it works fine but the moment I open a .ipynb file in some other folder it shows a kernel error
I think I have not installed it properly, can someone please guide me what to do now ?

Related

VScode showing raw source code instead of the remote jupyer notebook

I'm a bit puzzled of what goes wrong, and maybe someone here knows, or has had it before.
First, i got Docker on windows 11.
It runs a ubuntu python container, for all kind of AI stuff.
My local windows PC, has Vscode, i've made a connection to the local container (ssh).
When i open a .ipynb I see the raw file a Json like structure.
That is a bit strange because if i create a new ipynb on windows 11
Its is showing code/markdown cells normally like how vscode shows it normally.
VScode should know what Jupiter notebooks are
So Vscode knows python, everything seems installed in relation to jupyter and remote (localhost) connections.
Does anyone know perhaps what is going wrong here?.
Maybe its something i overlooked, missed.
Or some extra step that needs to be done at VScode, or i open it wrongly ?.
I open the file through the left pane open.. as shown:
I believe all related jupyter notebook stuff is installed in VScode
PS C:\python projects\test> code --list-extensions --show-versions
btwiuse.vscode-remote-server#0.0.5
colinfang.my-nbpreviewer#1.2.2
GitHub.copilot#1.56.7152
jithurjacob.nbpreviewer#1.2.2
ms-azuretools.vscode-docker#1.22.2
ms-dotnettools.csharp#1.25.0
ms-python.python#2022.16.1
ms-python.vscode-pylance#2022.10.40
ms-toolsai.jupyter#2022.9.1202862440
ms-toolsai.jupyter-keymap#1.0.0
ms-toolsai.jupyter-renderers#1.0.10
ms-toolsai.vscode-jupyter-cell-tags#0.1.6
ms-toolsai.vscode-jupyter-powertoys#0.0.6
ms-toolsai.vscode-jupyter-slideshow#0.1.5
ms-vscode-remote.remote-containers#0.255.4
ms-vscode-remote.remote-ssh#0.90.1
ms-vscode-remote.remote-ssh-edit#0.84.0
samghelms.jupyter-notebook-vscode#0.0.2

Having a problem with build\nodes\runnodes

I've been trying to build a CordApp and I downloaded the template from GitHub. The code that I've written is available on the following link:
https://github.com/shanmukhipriya99/taskcordapp
When I'm trying to run gradlew.bat deployNodes in the cmd terminal, this is what I got:
[gradlew.bat deployNodes]
Then when I run build\nodes\runnodes in the cmd terminal, this is what I got:
[build\nodes\runnodes]
Then I have three other terminal windows opening-up, they load the Corda part, show some red text that says something about the developer mode and all the node terminals get closed automatically before I'm able to read the entire text.
Can someone please help me in figuring out where I'm wrong!?
Thanks in advance!
It looks like you have had successfully started the nodes all in one terminal. I am not entirely sure, if this is the only issue, but I have seen this issue before. This is caused by lack of permission of the Terminal.
I have seen it happened for both Windows and Unix/Macos users. To resolve it you might need to grant the permission to Terminal manually.
If it still does not work out, I would actually suggest the alternative quick fix that Ashutosh mentioned in comment. Open a new tab and go to the root folder of each nodecd /build/nodes/XXX, and start the node manually via java -jar corda.jar

How to troubleshoot .app bundle not working

I have been making an application using Javafx, and have finished the project turning it into an application. However, when I try to run the application it immediatley crashes with know error messages, nothing is printed to the console. As a note, the .jar file runs if clicked. This has led me to believe that the problem is with my file structure namely the fact that their are 2 binary files in the Java folder.
Here is my .app packages contents:
A fix to my problem would be nice, however beyond that how should one go about debugging this sort of thing, I can not find any log messages, can it be done?
Edit: Nothing is printed when in terminal I use open -a ApplicationName and the application crashes. And here is my info.plist.

RStudio is slow when loading a project / package in development

I have recently experienced a serious problem with Rstudio when developing a package. Whenever, I open an existing project with Rstudio where versions are controlled with Git, it takes so long for it to respond to any command. It is also impossible to type something in the console (e.g. 1+1) and obtain the result. Even quitting the Rstudio, should be done with task manager. There is no problem when I create a new project / package or when I open directly a R script.
This problem appears both when the project is saved on a dropbox or on a local repository.
To overcome this issue everytime I need to modify my code, I create a new project, and then I move toward the new repository all my current R scripts and the folder ".git".
I would appreciate if anybody could help me with this issue.
I had a similar problem to yours. Changing the attribute of my .git folder into hidden solved my problem.
We recently discovered an issue where projects using git for version control could become laggy / unusable on Windows if the .git folder within the project had become a non-hidden directory.
https://github.com/rstudio/rstudio/issues/1918

ShinyApp : Connection Reset By Peer

The shinyapp I built earlier was running fine in my old laptop. Recently I got a new laptop with Windows10. After setting up everything, I tried to run the app but it the browser opens and closes immediately with the error :
Listening on http://127.0.0.1:5004
ERROR: [on_request_read] connection reset by peer
I have also set chrome as default browser....
I deployed this app in shinyapps.io it is working fine there.
I tried few more simple apps in Rstudio but the same issue coming. Looks like the issue is more related to some setting in Windows10. Can someone help me please.
Thanks in Advance.....
Without details on the specific code, I'd share my personal experience with the same error for your reference. In my case, I used RStudio to create a shiny app that save data to a local directory on my computer, while I told R to output files to directory "response", I hadn't created such directory under the working directory so came the error. Simply creating the sub directory named "response" solve this right away. Or for moving your project files to different places in the future, you can just check whether the folder exists, if not, create one shall save you a lot of time.

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