Trouble Creating a New Site

I am running on Linux.

hugo v0.88.1-5BC54738+extended linux/amd64 BuildDate=2021-09-04T09:39:19Z VendorInfo=gohugoio

I have installed several sites without any problem so far. Now I am trying to create a new hugo site and I am getting an error

Simon@mx:~/WEBSITE
$ hugo new site alpha
Congratulations! Your new Hugo site is created in /home/Simon/WEBSITE/alpha.

Just a few more steps and you're ready to go:

1. Download a theme into the same-named folder.
   Choose a theme from https://themes.gohugo.io/ or
   create your own with the "hugo new theme <THEMENAME>" command.
2. Perhaps you want to add some content. You can add single files
   with "hugo new <SECTIONNAME>/<FILENAME>.<FORMAT>".
3. Start the built-in live server via "hugo server".

Visit https://gohugo.io/ for quickstart guide and full documentation.
Simon@mx:~/WEBSITE
$ cd alpha/
Simon@mx:~/WEBSITE/alpha
$ hugo server
Start building sites … 
hugo v0.88.1-5BC54738+extended linux/amd64 BuildDate=2021-09-04T09:39:19Z VendorInfo=gohugoio
WARN 2022/05/09 23:05:25 found no layout file for "HTML" for kind "home": You should create a template file which matches Hugo Layouts Lookup Rules for this combination.
WARN 2022/05/09 23:05:25 found no layout file for "HTML" for kind "taxonomy": You should create a template file which matches Hugo Layouts Lookup Rules for this combination.
WARN 2022/05/09 23:05:25 found no layout file for "HTML" for kind "taxonomy": You should create a template file which matches Hugo Layouts Lookup Rules for this combination.

                   | EN  
-------------------+-----
  Pages            |  3  
  Paginator pages  |  0  
  Non-page files   |  0  
  Static files     |  0  
  Processed images |  0  
  Aliases          |  0  
  Sitemaps         |  1  
  Cleaned          |  0  

Built in 10 ms
Watching for changes in /home/Simon/WEBSITE/alpha/{archetypes,content,data,layouts,static}
Watching for config changes in /home/Simon/WEBSITE/alpha/config.toml
Environment: "development"
Serving pages from memory
Running in Fast Render Mode. For full rebuilds on change: hugo server --disableFastRender
Web Server is available at http://localhost:1313/ (bind address 127.0.0.1)
Press Ctrl+C to stop

Which error? Everything should be fine if you follow Quick Start | Hugo. Also see Hugo's Lookup Order | Hugo. (The warnings are showing coz you skipped the theme creation)

You are receiving this warning because you have no templates. Install a theme, or create basic templates (list.html and single.html) in the layouts/_default directory in the project root.