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getting jdk and intellicode errors in vs code. how do i fix it?

I am a very early beginner to coding. I downloaded VS Code so that I could, you know, have somewhere to code in Java. However, I keep getting these two errors telling me these two extensions that I already have installed on VS Code are not working here are the error messages. I already searched through the odds and ends of StackOverflow and have tried everything, and nothing has worked. Any help would be appreciated.
I inputted some code into settings.json under a "java.configuration.runtimes" thing but nothing in it worked. I conformed it to my installation directories and current Java version

Do you have a JDK (Java Development Kit) installed?
If you are on Windows, you can check by clicking on the start button, and search through applications and programs for a Java folder.
If you are on MacOS or Linux, you can open up the terminal/command line and type in "java -version" and if it is properly installed, it will display the version.
If you do not find a JDK installed, install one from https://www.oracle.com/ca-en/java/technologies/downloads/

Download and install the Coding Pack for Java.
It would be helpful to follow this documentation to get started.

NodeJS: npx webpack command fails due to write EOF error

Okay, I'm not a programmer first of all, so I have 0 idea what is happening. Please go easy on me..
The project I'm trying to compile is a web browser extension (or webpack idk). There is a file called Installer.bat with the "npm i" command and a file called compiler.bat with the "npx webpack" command.
Now, there is no issue within the project, because it worked on the same machine with different windows 7 with no problems. On this ystem (32-bit windows 7 by the way) I keep getting the following error when running compiler.bat file :
Error: write EOF
at WriteWrap.onWriteComplete [as oncomplete] (internal/stream_base_commons.js:94:16)
I know I should probably link the webpack.config.js code here, but it's pretty big and I'm thinking that this error is ocurring because of something entirely different anyway. I will say that during the installation of nodejs, the additional chocolatey packages failed because of problems with powershell/TLS 1.2 or whatever. I do have python 3.6 installed though. Not sure if that matters but yeah. And also, my friend who downloaded it on his machine has also stumbled across an error with the compiler.bat but it was a EPIPE error.
Any ideas? Do I need to install something else besides NodeJS? This project isn't mine and it always compiled with no problems in the past (on the same machine but a different windows 7 though). I tried to look for answers for weeks, but found nothing. Mostly people just had issues with their project CODE not the nodejs or modules. I'm almost losing hope and the author of the project doesn't want to communicate for whatever reason.
EDIT: Apparently didn't have java sdk 8 installed, fixed the issue.

Assertion Error : App Version has already been registered

Im using ember to develop a project.
Please help me with this error. Im unable to run my project on local. After hitting
ember server the build is successful. But on hitting the http://localhost:4200
Loads empty page with console error.
Uncaught Error: Assertion Failed: The initializer 'App Version' has already been registered
at assert (index.js:172)
at Function.initializer (index.js:420)
at registerInitializers (index.js:27)
at loadInitializers (index.js:68)
at Module.callback (app.js:25)
at Module.exports (loader.js:106)
at requireModule (loader.js:27)
at app-boot.js:3
Unable to understand what to do. Any help regarding this would be appreciated.

I did a code search to see where that initializer might exist and it looks to be part of ember-cli-app-version.
In your place I would remove ember-cli-app-version from your app with npm uninstall --save-dev ember-cli-app-version and then run ember serve again. The purpose of this addon is to make it easy to see your app's version number in the ember inspector, but that's not a big deal so removing it won't break anything and should get you moving forward.
If you want to investigate the issue further try searching your code base (including node_modules) for App Version to see where a duplicate exists.

Running npm install solved the problem.

The actual issue was due to the iCloud sync being active in my Macbook.
Turning iCloud sync off should solve the problem.

npm not installing returns error consistently

I was trying to install this : Search git whodotheyserve. com but this error shows up consistently .No matter what i try. I have tried other version of npm they are installed but the
npm test
error shows up .
npm run-script task
too returns error
This happens consistently .Also i am following each step mentioned in source of this project.Image attached.Please help where am i wrong here. The file extension used here ls .I had no experience with these. Image link
Echo %PATH% image link

The build fails because you are using Windows instead of Linux.
This is clearly stated in the installation instructions you claim to have followed in your duplicate question.
notes
The build tasks rely on Linux shell commands such as pkill and rsync
so are unlikely to run on other OS's without some tweaks.
If you want to run this under windows, you should ask the repo maintainer for guidance.

You have to install python 2.7 and make sure it's in your PATH variable.
Try:
set PATH=%PATH%;C:\python2.7\python.exe
Replace C:\python2.7\python.exe with your actual python installation path

The issue here was that this was made to run on linux only.So ,it won't run on windows on which i was trying to run it.The issue arose as i was trying to install it on wrong OS.I have successfully installed it on linux.It works great.
I want to thank all those who contributed in helping me with this issue.Thanks a lot to all those who helped.

Problems with Rails and JavaScript runtime on Windows machine

I am currently in a web development class and we are using Ruby on Rails.
I am using Ruby v1.9.2 and Rails v3.1.1.
My initial problem started when I tried to execute 'rails server'.
I would get the following error:
C:\Sites\rorProjects\basicRoRProject>rails server
C:/RailsInstaller/Ruby1.9.2/lib/ruby/gems/1.9.1/gems/execjs-1.2.13/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime.
See https://github.com/sstephenson/execjs for a list of available runtimes.(ExecJS::RuntimeUnavailable)
I have done some reading and the general consensus is to install the gems 'execjs' and 'therubyracer'. 'execjs' installed just fine, however when I tried to install 'therubyracer' I got the following error:
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing therubyracer: ERROR: Failed to build gem native extension.
C:/RailsInstaller/Ruby1.9.2/bin/ruby.exe extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers.
Check the mkmf.log file for more details.
You may need configuration options.
I then did some more reading and found a couple of people said to check that they had the gem 'libv8', which was required for 'therubyracer'. I did that and discovered that I didn't have it, so I then went to install that and got the same error that I did for 'therubyracer'.
I'm at a loss to think of anything else to do. Any help would be greatly appreciated.
Thanks guys!
THIS PROBLEM HAS BEEN SOLVED.
So, with the help of one of my classmates who had a similar problem, I installed Node.js using the Windows installer (this gave me a JavaScript run-time environment). I then added it to the path in the local variables.

So, with the help of one of my classmates who had a similar problem, I installed Node.js using the Windows installer. I then added it to the path in the local variables.