PHP Fail? Nextcloudpi after update

I habe this problem, when i want to enter my nextcloudpi page, i get this:

> <?php
> /**
>  * @copyright Copyright (c) 2016, ownCloud, Inc.
>  *
>  * @author Christoph Wurst <christoph@winzerhof-wurst.at>
>  * @author Joas Schilling <coding@schilljs.com>
>  * @author Jörn Friedrich Dreyer <jfd@butonic.de>
>  * @author Lukas Reschke <lukas@statuscode.ch>
>  * @author Morris Jobke <hey@morrisjobke.de>
>  * @author Robin Appelman <robin@icewind.nl>
>  * @author Roeland Jago Douma <roeland@famdouma.nl>
>  * @author Sergio Bertolín <sbertolin@solidgear.es>
>  * @author Thomas Müller <thomas.mueller@tmit.eu>
>  * @author Vincent Petry <vincent@nextcloud.com>
>  *
>  * @license AGPL-3.0
>  *
>  * This code is free software: you can redistribute it and/or modify
>  * it under the terms of the GNU Affero General Public License, version 3,
>  * as published by the Free Software Foundation.
>  *
>  * This program is distributed in the hope that it will be useful,
>  * but WITHOUT ANY WARRANTY; without even the implied warranty of
>  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>  * GNU Affero General Public License for more details.
>  *
>  * You should have received a copy of the GNU Affero General Public License, version 3,
>  * along with this program. If not, see <http://www.gnu.org/licenses/>
>  *
>  */
> 
> require_once __DIR__ . '/lib/versioncheck.php';
> 
> try {
> 	require_once __DIR__ . '/lib/base.php';
> 
> 	OC::handleRequest();
> } catch (\OC\ServiceUnavailableException $ex) {
> 	\OC::$server->getLogger()->logException($ex, ['app' => 'index']);
> 
> 	//show the user a detailed error page
> 	OC_Template::printExceptionErrorPage($ex, 503);
> } catch (\OC\HintException $ex) {
> 	try {
> 		OC_Template::printErrorPage($ex->getMessage(), $ex->getHint(), 503);
> 	} catch (Exception $ex2) {
> 		try {
> 			\OC::$server->getLogger()->logException($ex, ['app' => 'index']);
> 			\OC::$server->getLogger()->logException($ex2, ['app' => 'index']);
> 		} catch (Throwable $e) {
> 			// no way to log it properly - but to avoid a white page of death we try harder and ignore this one here
> 		}
> 
> 		//show the user a detailed error page
> 		OC_Template::printExceptionErrorPage($ex, 500);
> 	}
> } catch (\OC\User\LoginException $ex) {
> 	OC_Template::printErrorPage($ex->getMessage(), $ex->getMessage(), 403);
> } catch (Exception $ex) {
> 	\OC::$server->getLogger()->logException($ex, ['app' => 'index']);
> 
> 	//show the user a detailed error page
> 	OC_Template::printExceptionErrorPage($ex, 500);
> } catch (Error $ex) {
> 	try {
> 		\OC::$server->getLogger()->logException($ex, ['app' => 'index']);
> 	} catch (Error $e) {
> 		http_response_code(500);
> 		header('Content-Type: text/plain; charset=utf-8');
> 		print("Internal Server Error\n\n");
> 		print("The server encountered an internal error and was unable to complete your request.\n");
> 		print("Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.\n");
> 		print("More details can be found in the webserver log.\n");
> 
> 		throw $ex;
> 	}
> 	OC_Template::printExceptionErrorPage($ex, 500);
> }

Cloud somebody help me

Well we would need more information to start trying to help you. How are you installing it? What is your setup? What device are your using? What steps are you taking/doing?