Login page not working on Chrome in Linux

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Nextcloud version (eg, 12.0.2):
Operating system and version (eg, Ubuntu 17.04): PopOS 18.04
Apache or nginx version (eg, Apache 2.4.25): nginx/1.12.2
PHP version (eg, 7.1): 7.1.21

The issue you are facing:
I get this screen when trying to log in via the web interface on Chrome 69.0.3497.81. The circle just keeps spinning, I am able to enter login info, but nothing happens when hitting the login button. I’ve only been using PopOS for a couple of weeks and have not ever gotten a functional login page. So I believe this was broken in Chrome 68 and NextCloud 13 as well. Everything works fine with Firefox on the same computer. I do not have issues with Windows versions of Chrome.

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

Steps to replicate it:

  1. Browse to the web interface of my NextCloud instance.

The output of your Nextcloud log in Admin > Logging:

does not add anything to the logs

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

$CONFIG = array (
  'instanceid' => 'ocm3ssyzw6s3',
  'passwordsalt' => 'yOa+bajApFpyWAl78j/Mgnpj3ZQCUx',
  'secret' => 'sAd3d/5UFl1ZBmi9PzAiIM5qsrYWtID2qUlUHoqzAtaL/FC1',
  'trusted_proxies' =>
  array (
    0 => '',
  'overwritehost' => 'cloud.domain.com',
  'overwriteprotocol' => 'http',
  'datadirectory' => '/var/www/html/nextcloud/data',
  'overwrite.cli.url' => '',
  'dbtype' => 'mysql',
  'version' => '',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'user',
  'dbpassword' => 'password',
  'installed' => true,
  'maintenance' => false,
  'theme' => '',
  'loglevel' => 2,
  'updater.release.channel' => 'stable',
  'updater.secret' => '$2y$10$8urkjARPwr9YGgvp/RYujulethuI7BgVLWqto454mmHTFUQPGPQ3e',

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

[10/Sep/2018:23:07:36 -0500] "GET /login HTTP/1.0" 200 13468 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36" "-"