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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 12.0.2): 14.0.3
Operating system and version (eg, Ubuntu 17.04): Centos 7
Apache or nginx version (eg, Apache 2.4.25): Nginx 1.12.2
PHP version (eg, 7.1): 7.1.23
The issue you are facing: no webpage is displayed - error 500
Is this the first time you’ve seen this error? (Y/N):Y
Steps to replicate it:
- manually upgrade from 13.0.6
- copy over config.php
- copy over data folder
- copy over apps folder
- start nginx
The output of your Nextcloud log in Admin > Logging:
{"reqId":"jF3KZsAPJsPzHJJRmGD6","level":3,"time":"October 13, 2018 01:43:54","remoteAddr":"172.25.47.100","user":"--","app":"PHP","method":"GET","url":"\/","message":"TypeError: Argument 4 passed to OCA\\Theming\\ThemingDefaults::__construct() must implement interface OCP\\Files\\IAppData, instance of OC\\Memcache\\Factory given, called in \/var\/www\/html\/nextcloud\/lib\/private\/Server.php on line 952 at \/var\/www\/html\/nextcloud\/apps\/theming\/lib\/ThemingDefaults.php#93","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/69.0.3497.100 Safari\/537.36","version":"13.0.6.1"}
{"reqId":"rrqcfpvK0VwISkLUGa1l","level":3,"time":"October 13, 2018 01:43:55","remoteAddr":"172.25.47.100","user":"--","app":"index","method":"GET","url":"\/","message":{"Exception":"TypeError","Message":"Argument 4 passed to OCA\\Theming\\ThemingDefaults::__construct() must implement interface OCP\\Files\\IAppData, instance of OC\\Memcache\\Factory given, called in \/var\/www\/html\/nextcloud\/lib\/private\/Server.php on line 952","Code":0,"Trace":[{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/Server.php","line":952,"function":"__construct","class":"OCA\\Theming\\ThemingDefaults","type":"->","args":[{"__class__":"OC\\AllConfig"},{"__class__":"OC\\L10N\\L10N"},{"__class__":"OC\\URLGenerator"},{"__class__":"OC\\Memcache\\Factory"},{"__class__":"OCA\\Theming\\Util"},{"__class__":"OCA\\Theming\\ImageManager"},{"__class__":"OC\\App\\AppManager"}]},{"file":"\/var\/www\/html\/nextcloud\/3rdparty\/pimple\/pimple\/src\/Pimple\/Container.php","line":118,"function":"OC\\{closure}","class":"OC\\Server","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/AppFramework\/Utility\/SimpleContainer.php","line":117,"function":"offsetGet","class":"Pimple\\Container","type":"->","args":["ThemingDefaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/ServerContainer.php","line":132,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["ThemingDefaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/Server.php","line":1857,"function":"query","class":"OC\\ServerContainer","type":"->","args":["ThemingDefaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/Server.php","line":1140,"function":"getThemingDefaults","class":"OC\\Server","type":"->","args":[]},{"file":"\/var\/www\/html\/nextcloud\/3rdparty\/pimple\/pimple\/src\/Pimple\/Container.php","line":118,"function":"OC\\{closure}","class":"OC\\Server","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/AppFramework\/Utility\/SimpleContainer.php","line":117,"function":"offsetGet","class":"Pimple\\Container","type":"->","args":["OCP\\Defaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/ServerContainer.php","line":132,"function":"query","class":"OC\\AppFramework\\Utility\\SimpleContainer","type":"->","args":["OCP\\Defaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/private\/legacy\/template.php","line":85,"function":"query","class":"OC\\ServerContainer","type":"->","args":["OCP\\Defaults"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/base.php","line":374,"function":"__construct","class":"OC_Template","type":"->","args":["","update.admin","guest"]},{"file":"\/var\/www\/html\/nextcloud\/lib\/base.php","line":942,"function":"printUpgradePage","class":"OC","type":"::","args":[{"__class__":"OC\\SystemConfig"}]},{"file":"\/var\/www\/html\/nextcloud\/index.php","line":42,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"\/var\/www\/html\/nextcloud\/apps\/theming\/lib\/ThemingDefaults.php","Line":93,"CustomMessage":"--"},"userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/69.0.3497.100 Safari\/537.36","version":"13.0.6.1"}
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
<?php
$CONFIG = array (
'instanceid' => 'xxxxxxxxx',
'passwordsalt' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
'trusted_domains' =>
array (
0 => '192.168.1.54:86',
),
'datadirectory' => '/mnt/NEXTCLOUD',
'overwrite.cli.url' => 'http://192.168.1.54:86',
'dbtype' => 'mysql',
'version' => '13.0.6.1',
'dbname' => 'nextcloud',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'ncuser',
'dbpassword' => 'xxxxxxxxxxxxxxxxxxx',
'installed' => true,
'loglevel' => 2,
'logdateformat' => 'F d, Y H:i:s',
'mail_smtpmode' => 'smtp',
'mail_from_address' => 'nextcloud',
'mail_domain' => 'glenwire.home',
'mail_smtphost' => 'my smtp server',
'mail_smtpsecure' => 'tls',
'mail_smtpauthtype' => 'LOGIN',
'mail_smtpauth' => 1,
'mail_smtpname' => 'smtpauth',
'mail_smtppassword' => 'my smtp pass',
'mail_smtpdebug' => false,
'memcache.local' => '\\OC\\Memcache\\APCu',
'filelocking.enabled' => 'true',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => '/var/run/redis/redis.sock',xxx
'port' => 0,
'timeout' => 0.0,
),
'theme' => '',
'updater.release.channel' => 'stable',
'maintenance' => false,
'ldapIgnoreNamingRules' => false,
'ldapProviderFactory' => '\\OCA\\User_LDAP\\LDAPProviderFactory',
'updater.secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
);
The output of your Apache/nginx/system log in /var/log/____:
no errors
nextcloud.log
{“reqId”:“jF3KZsAPJsPzHJJRmGD6”,“level”:3,“time”:“October 13, 2018 01:43:54”,“remoteAddr”:“172.25.47.100”,“user”:"–",“app”:“PHP”,“method”:“GET”,“url”:"/",“message”:“TypeError: Argument 4 passed to OCA\Theming\ThemingDefaults::__construct() must implement interface OCP\Files\IAppData, instance of OC\Memcache\Factory given, called in /var/www/html/nextcloud/lib/private/Server.php on line 952 at /var/www/html/nextcloud/apps/theming/lib/ThemingDefaults.php#93”,“userAgent”:“Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36”,“version”:“13.0.6.1”}
{“reqId”:“rrqcfpvK0VwISkLUGa1l”,“level”:3,“time”:“October 13, 2018 01:43:55”,“remoteAddr”:“172.25.47.100”,“user”:"–",“app”:“index”,“method”:“GET”,“url”:"/",“message”:{“Exception”:“TypeError”,“Message”:“Argument 4 passed to OCA\Theming\ThemingDefaults::__construct() must implement interface OCP\Files\IAppData, instance of OC\Memcache\Factory given, called in /var/www/html/nextcloud/lib/private/Server.php on line 952”,“Code”:0,“Trace”:[{“file”:"/var/www/html/nextcloud/lib/private/Server.php",“line”:952,“function”:"__construct",“class”:“OCA\Theming\ThemingDefaults”,“type”:"->",“args”:[{“class”:“OC\AllConfig”},{“class”:“OC\L10N\L10N”},{“class”:“OC\URLGenerator”},{“class”:“OC\Memcache\Factory”},{“class”:“OCA\Theming\Util”},{“class”:“OCA\Theming\ImageManager”},{“class”:“OC\App\AppManager”}]},{“file”:"/var/www/html/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php",“line”:118,“function”:“OC\{closure}”,“class”:“OC\Server”,“type”:"->",“args”:["*** sensitive parameters replaced "]},{“file”:"/var/www/html/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php",“line”:117,“function”:“offsetGet”,“class”:“Pimple\Container”,“type”:"->",“args”:[“ThemingDefaults”]},{“file”:"/var/www/html/nextcloud/lib/private/ServerContainer.php",“line”:132,“function”:“query”,“class”:“OC\AppFramework\Utility\SimpleContainer”,“type”:"->",“args”:[“ThemingDefaults”]},{“file”:"/var/www/html/nextcloud/lib/private/Server.php",“line”:1857,“function”:“query”,“class”:“OC\ServerContainer”,“type”:"->",“args”:[“ThemingDefaults”]},{“file”:"/var/www/html/nextcloud/lib/private/Server.php",“line”:1140,“function”:“getThemingDefaults”,“class”:“OC\Server”,“type”:"->",“args”:[]},{“file”:"/var/www/html/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php",“line”:118,“function”:“OC\{closure}”,“class”:“OC\Server”,“type”:"->",“args”:[" sensitive parameters replaced ***"]},{“file”:"/var/www/html/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php",“line”:117,“function”:“offsetGet”,“class”:“Pimple\Container”,“type”:"->",“args”:[“OCP\Defaults”]},{“file”:"/var/www/html/nextcloud/lib/private/ServerContainer.php",“line”:132,“function”:“query”,“class”:“OC\AppFramework\Utility\SimpleContainer”,“type”:"->",“args”:[“OCP\Defaults”]},{“file”:"/var/www/html/nextcloud/lib/private/legacy/template.php",“line”:85,“function”:“query”,“class”:“OC\ServerContainer”,“type”:"->",“args”:[“OCP\Defaults”]},{“file”:"/var/www/html/nextcloud/lib/base.php",“line”:374,“function”:"__construct",“class”:“OC_Template”,“type”:"->",“args”:["",“update.admin”,“guest”]},{“file”:"/var/www/html/nextcloud/lib/base.php",“line”:942,“function”:“printUpgradePage”,“class”:“OC”,“type”:"::",“args”:[{“class”:“OC\SystemConfig”}]},{“file”:"/var/www/html/nextcloud/index.php",“line”:42,“function”:“handleRequest”,“class”:“OC”,“type”:"::",“args”:[]}],“File”:"/var/www/html/nextcloud/apps/theming/lib/ThemingDefaults.php",“Line”:93,“CustomMessage”:"–"},“userAgent”:“Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36”,“version”:“13.0.6.1”}