Refresh error in modification gives an error

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public function clearlog() {
		$this->load->language('marketplace/modification');
		
		$this->document->setTitle($this->language->get('heading_title'));

		$this->load->model('setting/modification');
		
	                                   	if ($this->validate()) {
      	fclose($handle);     -------------------------------------this is line 670         
			
					$handle = fopen(DIR_LOGS . 'ocmod_error.log', 'w+');
			$handle = fopen(DIR_LOGS . 'ocmod.log', 'w+');

			fclose($handle);

			$this->session->data['success'] = $this->language->get('text_success');

			$url = '';

			if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

			if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

			if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

			$this->response->redirect($this->url->link('marketplace/modification', 'user_token=' . $this->session->data['user_token'] . $url, true));
		}

		$this->getList();
	}