[NextCloud 16] [Debian 10 32bit] [Nginx-PHP7.3.x] WebDav Broken on HTTP/1.1

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Nextcloud version : 16.0.X
Operating system and version _: Debian 10 32 bit
Apache or nginx version : Nginx 1.14
PHP version : 7.3

The issue you are facing:

WebDAV works only on HTTP/2 connection.
Broken while using HTTP/1.1

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

Steps to replicate it:

  1. Install Nextcloud Android Client 3.7.0
  2. Login to the application
  3. No folders are detected.
  4. Nginx Logs show error 400 on PROPFIND.

The output of your Nextcloud log in Admin > Logging:

NIL

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

$CONFIG = array (
  'instanceid' => '',
  'passwordsalt' => '',
  'secret' => '',
  'trusted_domains' =>
  array (
    0 => 'drive.guyz92.tk',
  ),
  'datadirectory' => '/var/www/drive.guyz92.tk/data',
  'dbtype' => 'sqlite3',
  'version' => '16.0.3.0',
  'overwrite.cli.url' => 'https://drive.guyz92.tk',
  'installed' => true,
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'updater.release.channel' => 'production',
);

The output of your Apache/nginx/system log in /var/log/____:

12.12.12.12 - guyz92 [14/Jul/2019:13:01:21 +0800] "GET /ocs/v1.php/cloud/user?format=json HTTP/1.1" 401 140 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:28 +0800] "GET /status.php HTTP/1.1" 499 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:28 +0800] "GET /index.php/avatar/guyz92/224 HTTP/1.1" 499 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:28 +0800] "GET /ocs/v1.php/cloud/user?format=json HTTP/1.1" 499 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:42 +0800] "GET /ocs/v1.php/cloud/user?format=json HTTP/1.1" 401 140 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:42 +0800] "PROPFIND /remote.php/webdav/ HTTP/1.1" 400 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:44 +0800] "PROPFIND /remote.php/webdav/ HTTP/1.1" 400 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:45 +0800] "PROPFIND /remote.php/webdav/ HTTP/1.1" 400 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"
12.12.12.12 - guyz92 [14/Jul/2019:13:01:46 +0800] "PROPFIND /remote.php/webdav/ HTTP/1.1" 400 0 "-" "Mozilla/5.0 (Android) Nextcloud-android/3.7.0"