Internal Server error v17.0.1.1

Nextcloud version (eg, 12.0.2):17.0.1.1
Operating system and version (eg, Ubuntu 17.04):QNAP
Apache or nginx version (eg, Apache 2.4.25): ?
PHP version (eg, 7.1):7

The issue you are facing:

Is this the first time you’ve seen this error? (Y/N):Y

Steps to replicate it:

  1. Fresh install
  2. wait?!
  3. Open login page of nextcloud

The output of your Nextcloud log in Admin > Logging:

{"reqId":"8JKUWi9XGiXo0v68Cyv9","level":3,"time":"2019-11-20T00:57:19+00:00","remoteAddr":"93.202.238.xxx","user":"admin","app":"index","method":"GET","url":"\/nextcloud\/index.php\/apps\/files\/","message":{"Exception":"OCP\\Files\\NotFoundException","Message":"","Code":0,"Trace":[{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/apps\/files\/lib\/Controller\/ViewController.php","line":130,"function":"getStorageInfo","class":"OC_Helper","type":"::","args":["\/",false]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/apps\/files\/lib\/Controller\/ViewController.php","line":178,"function":"getStorageInfo","class":"OCA\\Files\\Controller\\ViewController","type":"->","args":[]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":170,"function":"index","class":"OCA\\Files\\Controller\\ViewController","type":"->","args":["","",null,false]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php","line":99,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files\\Controller\\ViewController"},"index"]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/AppFramework\/App.php","line":126,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files\\Controller\\ViewController"},"index"]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php","line":47,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files\\Controller\\ViewController","index",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"files.view.index"}]},{"function":"__invoke","class":"OC\\AppFramework\\Routing\\RouteActionHandler","type":"->","args":[{"_route":"files.view.index"}]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/Route\/Router.php","line":297,"function":"call_user_func","args":[{"__class__":"OC\\AppFramework\\Routing\\RouteActionHandler"},{"_route":"files.view.index"}]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/base.php","line":1000,"function":"match","class":"OC\\Route\\Router","type":"->","args":["\/apps\/files\/"]},{"file":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/index.php","line":42,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"\/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/lib\/private\/legacy\/helper.php","Line":488,"CustomMessage":"--"},"userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"17.0.1.1"}
{"reqId":"8JKUWi9XGiXo0v68Cyv9","level":3,"time":"2019-11-20T00:57:19+00:00","remoteAddr":"93.202.238.xxx","user":"admin","app":"PHP","method":"GET","url":"\/nextcloud\/index.php\/apps\/files\/","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/share\/CE_CACHEDEV1_DATA\/Web\/nextcloud\/3rdparty\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko\/20100101 Firefox\/70.0","version":"17.0.1.1"}

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'instanceid' => 'xxx',
  'passwordsalt' => 'xxx/xxx',
  'secret' => 'xxx+xxx+xxx',
  'trusted_domains' => 
  array (
    0 => '192.168.1.xxx:8081',
	1 => '192.168.1.xxx',
	2 => 'xxx.de',
	3 => 'www.xxx.de',
	4 => '93.202.238.xxx',
	5 => 'xxx.myqnapcloud.com',
  ),
  'datadirectory' => '/share/CE_CACHEDEV1_DATA/Web/nextcloud/data',
  'dbtype' => 'mysql',
  'version' => '17.0.1.1',
  'overwrite.cli.url' => 'http://xxx.de/nextcloud',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'oc_administrator',
  'dbpassword' => 'xxx',
  'installed' => true,
  'theme' => '',
  'loglevel' => 2,
  'maintenance' => false,
);
[/share/CE_CACHEDEV1_DATA/Web/nextcloud] # ls -lrt
total 248
-rwxrwxrwx  1 httpdusr administrators 34520 2019-11-07 13:04 COPYING*
-rwxrwxrwx  1 httpdusr administrators 12063 2019-11-07 13:04 AUTHORS*
drwxrwxrwx  3 httpdusr administrators  4096 2019-11-07 13:04 themes/
-rwxrwxrwx  1 httpdusr administrators  2287 2019-11-07 13:04 status.php*
-rwxrwxrwx  1 httpdusr administrators    26 2019-11-07 13:04 robots.txt*
drwxrwxrwx  4 httpdusr administrators  4096 2019-11-07 13:04 resources/
-rwxrwxrwx  1 httpdusr administrators  5139 2019-11-07 13:04 remote.php*
-rwxrwxrwx  1 httpdusr administrators  2951 2019-11-07 13:04 public.php*
drwxrwxrwx  2 httpdusr administrators  4096 2019-11-07 13:04 ocs-provider/
drwxrwxrwx  2 httpdusr administrators  4096 2019-11-07 13:04 ocs/
drwxrwxrwx  2 httpdusr administrators  4096 2019-11-07 13:04 ocm-provider/
-rwxrwxrwx  1 httpdusr administrators   283 2019-11-07 13:04 occ*
drwxrwxrwx  6 httpdusr administrators  4096 2019-11-07 13:04 lib/
-rwxrwxrwx  1 httpdusr administrators  3172 2019-11-07 13:04 index.php*
-rwxrwxrwx  1 httpdusr administrators   156 2019-11-07 13:04 index.html*
-rwxrwxrwx  1 httpdusr administrators  4993 2019-11-07 13:04 cron.php*
-rwxrwxrwx  1 httpdusr administrators  3805 2019-11-07 13:04 console.php*
drwxrwxrwx  2 httpdusr administrators  4096 2019-11-07 13:05 updater/
drwxrwxrwx 42 httpdusr administrators  4096 2019-11-07 13:05 apps/
-rwxrwxrwx  1 httpdusr administrators   362 2019-11-07 13:08 version.php*
drwxrwxrwx 13 httpdusr administrators  4096 2019-11-07 13:08 settings/
drwxrwxrwx 33 httpdusr administrators  4096 2019-11-07 13:08 3rdparty/
drwxrwxrwx 23 httpdusr administrators  4096 2019-11-07 13:08 core/
drwxrwx---  6 httpdusr administrators  4096 2019-11-18 21:07 data/
drwxrwxrwx  2 httpdusr administrators  4096 2019-11-19 10:58 config/
[/share/CE_CACHEDEV1_DATA/Web/nextcloud/data] # ls -lrt
total 3740
-rw-rw---- 1 httpdusr administrators       0 2019-11-18 20:45 index.html
drwxrwx--- 2 httpdusr administrators    4096 2019-11-18 20:45 files_external/
drwxrwx--- 3 httpdusr administrators    4096 2019-11-18 21:07 admin/
drwxrwx--- 9 httpdusr administrators    4096 2019-11-19 08:40 appdata_oczb8s6win5q/
drwxrwx--- 5 httpdusr administrators    4096 2019-11-19 08:46 administrator/
-rw-r----- 1 httpdusr administrators 3780625 2019-11-20 02:06 nextcloud.log

Does your nextcloud config say version ‘version’ => ‘17.0.1.1’ but your post title says 17.0.0.1?

The config file is Correct. Sorry.
I also found pur That It Works in chrome and Safari so far, the Problem occurs in Firefox