Modifications to ninja forms version 2.9.x recaptcha field so multiple recaptchas will work on a single page

nf_grecaptcha_explicit_render.js

function nf_grecaptcha_explicit_render(){
    jQuery('.g-recaptcha').each(function(){
        var sitekey = jQuery(this).data('sitekey');
        grecaptcha.render(this, {
            'sitekey':sitekey
        })
    });
}

recaptcha.php

<?php 
//This is a modified version of the function in the file: ninja-forms/deprecated/includes/fields/recaptcha.php

function ninja_forms_field_recaptcha_display( $field_id, $data, $form_id = '' ) {
	$settings = get_option( "ninja_forms_settings" );
	$lang = $settings['recaptcha_lang'];
	$siteKey = $settings['recaptcha_site_key'];
	$field_class = ninja_forms_get_field_class( $field_id, $form_id );
	$rand = wp_rand(0, 99999);
	wp_enqueue_script(
		'g-recaptcha',
		'https://www.google.com/recaptcha/api.js?onload=nf_grecaptcha_explicit_render&render=explicit&hl='.$lang, ['nf-grecaptcha-explicit-render'] );
	if ( !empty( $siteKey ) ) { ?>
		<input id="ninja_forms_field_<?php echo $rand;?>" name="ninja_forms_field_<?php echo $field_id;?>" type="hidden" class="<?php echo $field_class;?>" value="" rel="<?php echo $field_id;?>" />
		<div class="g-recaptcha" data-callback="nf_recaptcha_set_field_value" data-sitekey="<?php echo $siteKey; ?>"></div>
		<script type="text/javascript">
            function nf_recaptcha_set_field_value(inpval){
            	jQuery("#ninja_forms_field_<?php echo $rand;?>").val(inpval)
            }
            </script>
		<?php
	}
}