Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
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 7.5
Apache or nginx version (eg, Apache 2.4.25): apache 2.4
PHP version (eg, 7.1): 7.1
The issue you are facing: first copied data and DB to new server. Repointed DNS and installed let’s encrypt certs. Upgraded from 13 to 14.0.3. On my Android (OS v 8), the nextcloud app logged in just fine. However the NextCloud Talk app just says Redirecting.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Open Talk
- Try To login
- Stare at the “Redirecting”
The output of your Nextcloud log in Admin > Logging:
{"reqId":"W@yXqkAUAzNBhrebQ8BPwQAAAAQ","level":3,"time":"2018-11-14T21:46:19+00:00","remoteAddr":"96.74.34.225","user":"troy","app":"PHP","method":"GET","url":"\/index.php\/apps\/logreader\/poll?lastReqId=W%40yXqkAUAzNBhrebQ8BPvwAAAAQ","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/nextcloud\/3rdparty\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18","userAgent":"Mozilla\/5.0 (X11; Linux x86_64; rv:60.0) Gecko\/20100101 Firefox\/60.0","version":"14.0.3.0"}
{"reqId":"W@yXq0AUAzNBhrebQ8BPwgAAAAQ","level":3,"time":"2018-11-14T21:46:19+00:00","remoteAddr":"96.74.34.225","user":"troy","app":"PHP","method":"GET","url":"\/index.php\/apps\/logreader\/poll?lastReqId=W%40yXqkAUAzNBhrebQ8BPwAAAAAQ","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/html\/nextcloud\/3rdparty\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18","userAgent":"Mozilla\/5.0 (X11; Linux x86_64; rv:60.0) Gecko\/20100101 Firefox\/60.0","version":"14.0.3.0"}
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
$CONFIG = array (
'instanceid' => 'ocw7td97zd83',
'passwordsalt' => 'aEh0fD6//iaqwRaLq4I3F0mwcJ2xi0',
'secret' => 'URG/st1bEV7aCBd+fomEyxMEraB3aoFgizfvq2Dkhlayoaxd',
'trusted_domains' =>
array (
0 => 'xxx.xx.xxx.xxx',
1 => 'files.domain.com',
),
'datadirectory' => '/var/www/html/nextcloud/data',
'overwrite.cli.url' => 'http://files.domain.com',
'dbtype' => 'mysql',
'version' => '14.0.3.0',
'dbname' => 'fileshare',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'dbuser' => 'xxxxxxx',
'dbpassword' => 'xxxxxxx',
'installed' => true,
'updater.secret' => '$2y$10$UTHBLzEr6r/.kCOo4PpZHe9g.A0Wh0gZjnfDK3W03588EQTWsFFeC',
'maintenance' => false,
'theme' => '',
'loglevel' => 2,
'auth.bruteforce.protection.enabled' => false,
);
The output of your Apache/nginx/system log in /var/log/____:
[Wed Nov 14 21:23:15.667990 2018] [authz_core:error] [pid 11034] [client 96.74.34.225:15786] AH01630: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata
[Wed Nov 14 21:23:22.014415 2018] [authz_core:error] [pid 11049] [client 96.74.34.225:2108] AH01630: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata
[Wed Nov 14 21:26:48.200951 2018] [authz_core:error] [pid 11739] [client 96.74.34.225:3522] AH01630: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata
[Wed Nov 14 21:45:41.103057 2018] [authz_core:error] [pid 8844] [client 96.74.34.225:4968] AH01630: client denied by server configuration: /var/www/html/nextcloud/data/.ocdata