Web interface does not display files and missing icons

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Nextcloud version (eg, 12.0.2):
Operating system and version (eg, Ubuntu 17.04):18.04 LTS
Apache or nginx version (eg, Apache 2.4.25): 2.4.29
PHP version (eg, 7.1):7.2.17

The issue you are facing: When i log on via browser (ff,edge, ie) the page looks like it missing many items. the ones that i can identify are the list of Files, and the user icon on top right. all pages seem to be missing things although i cannot tell what they are … the formatting seems off.
if i check the webDAV interface, that is fine.
if i add a new file using the client webDAV, i can see it in my account by going to the server data/files.

How do i debug such a problem?

I have already done the chmod and chown per documentation.

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

Steps to replicate it: I don’t know

The output of your Nextcloud log in Admin > Logging:

"user":"fawzi","app":"webdav","method":"GET","url":"\/remote.php\/webdav\/Photos\/2019\/05\/19-05-04%2010-32-13%202817.jpg","message":{"Exception":"OCP\\Encryption\\Exceptions\\GenericEncryptionException","Message":"Bad Signature","Code":0,"Trace":[{"file":"\/var\/www\/nextcloud\/apps\/encryption\/lib\/Crypto\/Crypt.php","line":467,"function":"checkSignature","class":"OCA\\Encryption\\Crypto\\Crypt","type":"->","args":

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

$CONFIG = array (
  'updatechecker' => false,
  'passwordsalt' => 'XXXXXXXXXXXXXXXX',
  'trusted_domains' =>
  array (
    0 => 'cloud.kdsplumbing.com',
    1 => '',
  'datadirectory' => '/kdscloud',
  'overwrite.cli.url' => 'http://localhost',
  'dbtype' => 'mysql',
  'version' => '',
  'dbname' => 'kdscloud',
  'dbhost' => 'localhost',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'oc_cldadm',
  'dbpassword' => 'XXXXXXXXXXXXX',
  'logtimezone' => 'America/Los_Angeles',
  'installed' => true,
  'instanceid' => 'ocyhqdqljbds',
  'theme' => '',
  'loglevel' => 0,
  'maintenance' => false,
  'mail_from_address' => 'admin',
  'mail_smtpmode' => 'smtp',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_domain' => 'kdsplumbing.com',
  'mail_smtpauth' => 1,
  'mail_smtphost' => '',
  'mail_smtpport' => '465',
  'mail_smtpname' => '',
  'mail_smtppassword' => '',
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'data-fingerprint' => 'XXXXXXXXXXXXXXXX',
  'log_type' => 'file',
  'logfile' => '/var/log/kdscloud.log',
  'syslog_tag' => 'kdscloud',

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


ok, i figured out what was wrong, though i do not know how i did do that.
I did a changed my data drive to a larger one 2 days ago. So i simply rsynced my nextcloud data from excluding app data_ app data_ocyhq… and updater_ocyhq…
Don’t ask me why.
so now i moved them over and the web pages seem to be fine except for the user avatar icons… i have to figure that one out.

one thing, i did not expect that the data file would hold formatting data. i thought this would be part of /var/www/nextcloud and not my nextcloud data which is on a separate disk altogether.

if it is by design, i am not sure why.