Property welcome does not exist on type ‘JSX.IntrinsicElements’ in SPFx React

Recently I was developing an SPFX client-side web part using react JS. In that webpart, I was adding a react component into the existing react component, but the react application shows me error as:

Property welcome does not exist on type ‘JSX.IntrinsicElements’

Property welcome does not exist on type ‘JSX.IntrinsicElements’

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Property does not exist on type ‘JSX.IntrinsicElements’

The error was coming because I was writing in a small letter.

Actually, when we are developing a component using react we should start with a capital letter, the class name.

import * as React from 'react';
import { IWelcomeProps } from "./IWelcomeProps";
export default class Welcome extends React.Component<IWelcomeProps>
    public render():JSX.Element{

Also, while importing the react component we should give the capital letter like below:

 <Welcome message={this.props.message} /> :null} 

You may like following SharePoint tutorials:

Here we learned how to solve property then the property name does not exist of type ‘JSX.IntrinsicElements’ in SPFX react client-side part.

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