HTTP Error 500.19 - Internal Server Error Sitecore identity server

  

If you are facing the below issue with Sitecore 9, 10, or 10.1. Then it is recommended to install the below dependency to resolve this issue.

https://dotnet.microsoft.com/download/dotnet-core/2.2

But before installation, I would suggest verifying existing .netcore in your system
by running dotnet --info on PowerShell (as admin)

Hope this will resolve your issue.



There is also another possibility for this issue that from 
Turn Windows feature on or off - choose below options

You may also face still face the same issue with Sitecore 10.2 in that case you must be required to install as this is recommended by Sitecore https://doc.sitecore.com/xp/en/developers/102/sitecore-experience-commerce/system-requirements.html

Please go to this link to download https://dotnet.microsoft.com/download/dotnet-core/3.1

Hope the above options will help you to fix this issue.

How to start with Sitecore JSS using react framework ?

Hope you are already aware of the basics of Sitecore JSS and react as well. Here in this article, we are going to 

• Setup Sitecore JSS app with React framework
• Connect/Map JSS app with Existing Sitecore Instance
• Deploy JSS App to Existing Sitecore Instance

NOTE: I did a setup with Sitecore 10.2, but you can choose as per your need.

The steps are as below

• Sitecore 10.2 setup - without SXA [ex: sc.dev.local]
• Sitecore PowerShell extension 6.3
• install Sitecore package by clicking JSS compatible module 
• create JSS key in masterdb /sitecore/system/Settings/Services/API Keys/
• goto Repo location (where wanted to create Sitecore JSS Application)
• install jss cli by cmd/powershell as admin and run below command
• >npm install -g @sitecore-jss/sitecore-jss-cli
• To create Sitecore JSS app using react framework run below command
• >jss create jssapp react
• >jss start [to check it's working]
• add new site binding dev.local instance as jssapp (HTTP) and make host entry in C:\Windows\System32\drivers\etc
• run and check http://jssapp/
• run command >"jss setup" and add details as requested
• please verify hostname from JSSAppLocation/sitecore/config/jssapp.config
• run command >"jss deploy config" [To deploy Sitecore JSS Application config to Sitecore instance]
• run command >"jss deploy app -c -d" [To deploy everything from Sitecore JSS Application to Sitecore instance]
• verify again "http://jssapp" [To verify JSS application changes on hosted Sitecore instance]

Hope this will help you to set up quick with the Existing Sitecore instance.