[SOLVED] Submit button not bring up PayPal Commerce

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return call_user_func_array(array($controller, $this->method), $args);

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<?php
class ModelExtensionPaymentPayPal extends Model {
	public function getMethod($address, $total) {
		$method_data = array();
		
		$agree_status = $this->getAgreeStatus();
		
		if ($this->config->get('payment_paypal_status') && $this->config->get('payment_paypal_client_id') && $this->config->get('payment_paypal_secret') && $agree_status) {
			$this->load->language('extension/payment/paypal');

			$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone_to_geo_zone WHERE geo_zone_id = '" . (int)$this->config->get('payment_paypal_geo_zone_id') . "' AND country_id = '" . (int)$address['country_id'] . "' AND (zone_id = '" . (int)$address['zone_id'] . "' OR zone_id = '0')");

			if (($this->config->get('payment_paypal_total') > 0) && ($this->config->get('payment_paypal_total') > $total)) {
				$status = false;
			} elseif (!$this->config->get('payment_paypal_geo_zone_id')) {
				$status = true;
			} elseif ($query->num_rows) {
				$status = true;
			} else {
				$status = false;
			}

			if ($status) {			
				$method_data = array(
					'code'       => 'paypal',
					'title'      => $this->language->get('text_paypal_title'),
					'terms'      => '',
					'sort_order' => $this->config->get('payment_paypal_sort_order')
				);
			}
		}

		return $method_data;
	}
	
	public function hasProductInCart($product_id, $option = array(), $recurring_id = 0) {
		$query = $this->db->query("SELECT COUNT(*) AS total FROM " . DB_PREFIX . "cart WHERE api_id = '" . (isset($this->session->data['api_id']) ? (int)$this->session->data['api_id'] : 0) . "' AND customer_id = '" . (int)$this->customer->getId() . "' AND session_id = '" . $this->db->escape($this->session->getId()) . "' AND product_id = '" . (int)$product_id . "' AND recurring_id = '" . (int)$recurring_id . "' AND `option` = '" . $this->db->escape(json_encode($option)) . "'");
				
		return $query->row['total'];
	}
	
	public function getCountryByCode($code) {
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "country WHERE iso_code_2 = '" . $this->db->escape($code) . "' AND status = '1'");
				
		return $query->row;
	}
	
	public function getZoneByCode($country_id, $code) {
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone WHERE country_id = '" . (int)$country_id . "' AND (code = '" . $this->db->escape($code) . "' OR name = '" . $this->db->escape($code) . "') AND status = '1'");
		
		return $query->row;
	}
	
	public function getAgreeStatus() {
		$agree_status = true;
		
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "country WHERE status = '1' AND (iso_code_2 = 'CU' OR iso_code_2 = 'IR' OR iso_code_2 = 'SY' OR iso_code_2 = 'KP')");
		
		if ($query->rows) {
			$agree_status = false;
		}
		
		$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone WHERE country_id = '220' AND status = '1' AND (`code` = '43' OR `code` = '14' OR `code` = '09')");
		
		if ($query->rows) {
			$agree_status = false;
		}
		
		return $agree_status;
	}
	
	public function log($data, $title = null) {
		// Setting
		$_config = new Config();
		$_config->load('paypal');
			
		$config_setting = $_config->get('paypal_setting');
		
		$setting = array_replace_recursive((array)$config_setting, (array)$this->config->get('payment_paypal_setting'));
			
		if ($setting['general']['debug']) {
			$log = new Log('paypal.log');
			$log->write('PayPal debug (' . $title . '): ' . json_encode($data));
		}
	}
}

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<?php
/**
 * @package		OpenCart
 * @author		Daniel Kerr
 * @copyright	Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
 * @license		https://opensource.org/licenses/GPL-3.0
 * @link		https://www.opencart.com
*/

/**
* Action class
*/
class Action {
	private $id;
	private $route;
	private $method = 'index';
	
	/**
	 * Constructor
	 *
	 * @param	string	$route
 	*/
	public function __construct($route) {
		$this->id = $route;
		
		$parts = explode('/', preg_replace('/[^a-zA-Z0-9_\/]/', '', (string)$route));

		// Break apart the route
		while ($parts) {
			$file = DIR_APPLICATION . 'controller/' . implode('/', $parts) . '.php';

			if (is_file($file)) {
				$this->route = implode('/', $parts);		
				
				break;
			} else {
				$this->method = array_pop($parts);
			}
		}
	}

	/**
	 * 
	 *
	 * @return	string
	 *
 	*/	
	public function getId() {
		return $this->id;
	}
	
	/**
	 * 
	 *
	 * @param	object	$registry
	 * @param	array	$args
 	*/	
	public function execute($registry, array $args = array()) {
		// Stop any magical methods being called
		if (substr($this->method, 0, 2) == '__') {
			return new \Exception('Error: Calls to magic methods are not allowed!');
		}

		$file  = DIR_APPLICATION . 'controller/' . $this->route . '.php';	
		$class = 'Controller' . preg_replace('/[^a-zA-Z0-9]/', '', $this->route);
		
		// Initialize the class
		if (is_file($file)) {
			include_once(modification($file));
		
			$controller = new $class($registry);
		} else {
			return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
		}
		
		$reflection = new ReflectionClass($class);
		
		if ($reflection->hasMethod($this->method) && $reflection->getMethod($this->method)->getNumberOfRequiredParameters() <= count($args)) {
			return call_user_func_array(array($controller, $this->method), $args);
		} else {
			return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
		}
	}
}

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			} else {
				throw new \Exception('Error: Could not load model ' . $route . '!');
			}