npm start command => terminal is stuck on " > react-scripts start"

 It actually took up to 2 minutes to start, in WSL2, so just wait 

Convert existing unbuntu distro to WSL 2

 Windows PowerShell

Copyright (C) Microsoft Corporation. All rights reserved.

PS C:\Windows\system32> wsl -l -v

  NAME      STATE           VERSION

* Ubuntu    Stopped         1

PS C:\Windows\system32> wsl --set-version Ubuntu 2

Conversion in progress, this may take a few minutes...

For information on key differences with WSL 2 please visit https://aka.ms/wsl2

Conversion complete.

PS C:\Windows\system32> wsl -l -v

  NAME      STATE           VERSION

* Ubuntu    Stopped         2

Rails.application.config.action_controller.allow_forgery_protection error

 This got it to work for me. You'll have to change

class ApplicationController < ActionController::Base

to

class ApplicationController < ActionController::API

Hibernate option is missing

 

1. Search for cmd in the Start Menu.
2. Click on Run as administrator
3. Enter this command: powercfg /hibernate on
4. Set the Hiberfile type as Full using this command: powercfg /h /type full
5. Restart your computer.

https://www.thewindowsclub.com/hibernate-option-is-missing-control-panel

How to set a default Folder View for all folders in Windows

 You can apply single folder view to all the folders by opening folder you want and click View tab from there click Options --> View --> Apply to Folders button.

ds4windows touchpad gestures not working: set mode to controls

superclass mismatch for class migration in rails

 In my case I was executing a migration with a class name previously defined in a model.

https://stackoverflow.com/questions/25326969/heroku-run-rake-dbmigrate-rake-aborted-typeerror-superclass-mismatch-for-c