No app in context

Nextcloud version:
Operating system and version: Raspbian GNU/Linux 8 (jessie)
Apache or nginx version: nginx 1.6.2
PHP version: 5.6.30
Is this the first time you’ve seen this error?: Yes

Can you reliably replicate it? (If so, please outline steps): No, just uploaded files from NC desktop client to NC.

The issue you are facing:

I see a huge amount of errors in my logfile telling me “no app in context”.

I yesterday started to create a fresh instance of Nextcloud and uploaded all my files during the first sync using NC desktop client. I am using “external” data directory.

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

$CONFIG = array (
  'instanceid' => '***classiified***',
  'passwordsalt' => '***classiified***',
  'secret' => '***classiified***',
  'trusted_domains' =>
  array (
    0 => 'localhost',
    1 => '***classiified***',
  'datadirectory' => '/media/usbhdd-a/nextcloud/data',
  'overwrite.cli.url' => 'http://localhost',
  'dbtype' => 'mysql',
  'version' => '',
  'dbname' => 'nextcloud',
  'dbhost' => 'localhost',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => '***classiified***',
  'dbpassword' => '***classiified***',
  'logtimezone' => 'UTC',
  'installed' => true,
  'memcache.local' => '\\OC\\Memcache\\APC',
  'mail_smtpmode' => 'smtp',
  'mail_from_address' => '***classiified***',
  'mail_domain' => '***classiified***',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpport' => '465',
  'mail_smtphost' => '***classiified***',
  'mail_smtpauth' => 1,
  'mail_smtpname' => '***classiified***',
  'mail_smtppassword' => '***classified***',
  'mail_smtpsecure' => 'ssl',
  'loglevel' => 2,

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

empty log

Any idea how to get this fixed?

Kind regards

Seems to be related to Activity app. Once I disabled it in App-Store the messages disappeared. But this is just a workaround. Is there a solution for this? Or where shall I address it to?

Kind regards