I want this block/element only on first page/homepage

Hi Chetan,

You can use the generate_element_display hook. Reference:

Here's a code you may try:

add_filter( 'generate_element_display', function( $display, $element_id ) {
    if ( 100 === $element_id && is_paged() ) {
        $display = false;
    }

    return $display;
}, 10, 2 );

Replace 100 with the ID of your Block Element.

Adding PHP: https://docs.generatepress.com/article/adding-php/#code-snippets

Getting the Element ID: https://share.getcloudapp.com/YEuDdrnQ

https://prnt.sc/46CgQ3HhsgjM

I am getting this error when i added this code

How are you adding the code?

Can you make sure it's using one of these methods?
Adding PHP: https://docs.generatepress.com/article/adding-php/