ERR_SSL_PROTOCOL_ERROR in spfx workbench

Issue error on local workbaench:

This site can’t provide a secure connection localhost sent an invalid response.

Try running Windows Network Diagnostics.

ERR_SSL_PROTOCOL_ERROR

Solution:

1.Open package.json file

2. go to below section

before

  "scripts": {

    "build": "gulp bundle",

    "clean": "gulp clean",

    "test": "gulp test"

  }

and add "dev" : "set NODE_NO_HTTP2=1&& gulp serve",

after

  "scripts": {

    "build": "gulp bundle",

    "clean": "gulp clean",

    "test": "gulp test",

    "dev" : "set NODE_NO_HTTP2=1&& gulp serve"

  }

3.  Run "npm run dev" command in terminal or command window

4. if you  still face the issue then run command "gulp trust-dev-cert" then run "npm run dev" command

React version not specified in eslint-plugin-react settings. See https://github.com/jsx-eslint/eslint-plugin-react#configuration

When we  build the PCF project and  receive below warning  

Error:

Warning: React version not specified in eslint-plugin-react settings. See https://github.com/jsx-eslint/eslint-plugin-react#configuration .

[4:47:40 PM] [start]  Compiling and bundling control...

Solution : Open the ".eslintrc.json" and add below configuration 

"settings": {

      "react": {

        "version": "detect"

      }

    }