add in child theme

functions.php

if ( ! function_exists( 'electro_premium_templates_path' ) ) {
    /**
     * emart Elementor Template function
     *
     * @param string $path elementor template path.
     */
    function electro_premium_templates_path( $path ) {

	$path = 'https://electro.madrasthemes.com/4x/';
        return $path;
    }
}

	add_filter( 'mas_elementor_premium_templates_path', 'electro_premium_templates_path', 20 );