Shortcode content is not showing. Only the [shortcode-tag] is showing

Question

I am creating a small plugin where I am creating a few shortcodes. I am using Classic Editor plugin.

Here is my code in Plugin.php:

<?php
/**
 * Plugin Name: Simple Data Visualizer
 * Description: Reads data from CSV and displays data in required format
 * Version: 1.0.0
 * Author: Subrata
 */

function evd_dreambig_shortcode() {
    return 'Hello! Can you dream big?';
}

function register_evd_shortcodes() {
    add_shortcode( 'dream-big', 'evd_dreambig_shortcode' );
}

add_action( 'init', 'register_evd_shortcodes' );

But when I put the shortcode in Post content as [dream-big], it is only rendering the tag, i.e. [dream-big] on post page rather than showing its content: Hello! Can you dream big?

I also took a different approach:

function evd_dreambig_shortcode() {
    return '<h1>Hello! Can you dream big?</h1>';
}

add_shortcode( 'dream-big', 'evd_dreambig_shortcode' );

But this does not work either.

I am using a custom theme. I also tried by adding add_filter( 'the_content', 'do_shortcode'); in functions.php. Still no luck!

plugin.php is the only file in my plugin directory.

What I am doing wrong?

Answer 1

Try specifying the params defaults , like this:

evd_dreambig_shortcode($attr = [], $content = null){
    return $content
}