Sharepoint development framework environment setup. Yeoman crashing, install warnings

Following the guide https://docs.microsoft.com/en-us/sharepoint/dev/spfx/set-up-your-development-environment

made sure of all the prerequisites but as I follow the steps I get multiple warnings to do with depreciated packages. I've installed node 10.23.2 and checked the version using node -v.

When I try to run yo it crashes like below and powershell becomes unresponsive.

I'd really appreciate any pointers as to what I'm doing wrong and a route out of this.

Thanks

PS C:\WINDOWS\system32> npm install gulp yo /generator-sharepoint --global
npm : npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
At line:1 char:1
+ npm install gulp yo /generator-sharepoint --global
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (npm WARN deprec...-url#deprecated:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade to chokidar 3 with 15x less 
dependencies.
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and could be using insecure binaries. 
Upgrade to fsevents 2.
npm WARN deprecated request@2.88.2: request has been deprecated, see 
https://github.com/request/request/issues/3142
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated cross-spawn-async@2.2.5: cross-spawn no longer requires a build toolchain, use it instead
C:\Users\natha\AppData\Roaming\npm\gulp -> C:\Users\natha\AppData\Roaming\npm\node_modules\gulp\bin\gulp.js
C:\Users\natha\AppData\Roaming\npm\yo-complete -> C:\Users\natha\AppData\Roaming\npm\node_modules\yo\lib\completion
\index.js
C:\Users\natha\AppData\Roaming\npm\yo -> C:\Users\natha\AppData\Roaming\npm\node_modules\yo\lib\cli.js

> yo@3.1.1 postinstall C:\Users\natha\AppData\Roaming\npm\node_modules\yo
> yodoctor


Yeoman Doctor
Running sanity checks on your system

√ No .bowerrc file in home directory
√ Global configuration file is valid
√ NODE_PATH matches the npm root
√ No .yo-rc.json file in home directory
√ Node.js version
√ npm version
√ yo version

Everything looks all right!
npm WARN notsup Unsupported engine for got@5.7.1: wanted: {"node":">=0.10.0 <7"} (current: 
{"node":"10.23.2","npm":"6.14.10"})
npm WARN notsup Not compatible with your version of node/npm: got@5.7.1
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.2.7 
(node_modules\gulp\node_modules\chokidar\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted 
{"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
+ gulp@4.0.2
+ yo@3.1.1
+ /generator-sharepoint@1.11.0
updated 3 packages in 25.298s

PS C:\WINDOWS\system32> npm ls -g --depth=0 /generator-sharepoint
C:\Users\natha\AppData\Roaming\npm
`-- /generator-sharepoint@1.11.0 


PS C:\WINDOWS\system32> yo /sharepoint
node.exe : 
At C:\Users\natha\AppData\Roaming\npm\yo.ps1:15 char:3
+   & "node$exe"  "$basedir/node_modules/yo/lib/cli.js" $args
+   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
     _-----_
    |       |    .--------------------------.
    |--(o)--|    |      Welcome to the      |
   `---------´   |  SharePoint 
Client-side  |
    ( _´U`_ )    |    Solution 
Generator    |
    /___A___\    '--------------------------'
     |  ~  |     
   __'.___.'__   
 ´   `  |° ´ Y ` 
Let's create a new SharePoint solution.