meta_value = %d LIMIT 1', 'tfa_enable_tfa', 1);
		$count_user_id = $wpdb->get_var($sql);

		if (is_null($count_user_id)) { // Error in query.
			return apply_filters('simbatfa_enqueue_login_scripts', true);
		} elseif ($count_user_id > 0) { // A user exists with TFA enabled.
			return apply_filters('simbatfa_enqueue_login_scripts', true);
		}

		// No user exists with TFA enabled.
		return apply_filters('simbatfa_enqueue_login_scripts', false);
	}


	/**
	 * Return or output view content
	 *
	 * @param String  $path                   - path to template, usually relative to templates/ within the plugin directory
	 * @param Array	  $extract_these		  - key/value pairs for substitution into the scope of the template
	 * @param Boolean $return_instead_of_echo - what to do with the results
	 *
	 * @return String|Void
	 */
	public function include_template($path, $extract_these = array(), $return_instead_of_echo = false) {

		if ($return_instead_of_echo) ob_start();

		$template_file = apply_filters('simatfa_template_file', $this->templates_dir().'/'.$path, $path, $extract_these, $return_instead_of_echo);

		do_action('simbatfa_before_template', $path, $return_instead_of_echo, $extract_these, $template_file);

		if (!file_exists($template_file)) {
			error_log("TFA: template not found: $template_file (from $path)");
			echo __('Error:', 'all-in-one-wp-security-and-firewall').' '.__('Template path not found:', 'all-in-one-wp-security-and-firewall')." (".htmlspecialchars($path).")";
		} else {
			extract($extract_these);
			// The following are useful variables which can be used in the template.
			// They appear as unused, but may be used in the $template_file.
			$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
			$simba_tfa = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
			$totp_controller = $this->get_controller('totp');// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
			include $template_file;
		}

		do_action('simbatfa_after_template', $path, $return_instead_of_echo, $extract_these, $template_file);

		if ($return_instead_of_echo) return ob_get_clean();
	}

	/**
	 * Make sure that self::$frontend is the instance of Simba_TFA_Frontend, and return it
	 *
	 * @return Simba_TFA_Frontend
	 */
	public function load_frontend() {
		if (!class_exists('Simba_TFA_Frontend')) require_once($this->includes_dir().'/tfa_frontend.php');
		if (empty($this->frontend)) $this->frontend = new Simba_TFA_Frontend($this);
		return $this->frontend;
	}

	// __return_empty_string() does not exist until WP 3.7
	public function shortcode_when_not_logged_in() {
		return '';
	}

	/**
	 * Set authentication slug.
	 *
	 * @param String $authentication_slug - Authentication slug. Verify that two-factor authentication should not be repeated for the same slug.
	 */
	public function set_authentication_slug($authentication_slug) {
		$this->authentication_slug = $authentication_slug;
	}
	
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Simba_Two_Factor_Authentication_1' not found in /var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/classes/wp-security-two-factor-login.php:11
Stack trace:
#0 /var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security-core.php(221): include_once()
#1 /var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security-core.php(85): AIO_WP_Security-&gt;includes()
#2 /var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security-core.php(684): AIO_WP_Security-&gt;__construct()
#3 /var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/wp-security.php(54): require_once('/var/www/html/d...')
#4 /var/www/html/dportilho.com.br/web/wp-settings.php(526): include_once('/var/www/html/d...')
#5 /var/www/html/dportilho.com.br/web/wp-config.php(126): require_once('/var/www/html/d...')
#6 /var/www/html/dportilho.com.br/we in <b>/var/www/html/dportilho.com.br/web/wp-content/plugins/all-in-one-wp-security-and-firewall/classes/wp-security-two-factor-login.php</b> on line <b>11</b><br />