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Sorry to hear you’re facing problems 
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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): 18.0.1
Operating system and version (eg, Ubuntu 17.04): Nextcloud docker 18.0.1
Apache or nginx version (eg, Apache 2.4.25): Nextcloud docker 18.0.1
PHP version (eg, 7.1):Nextcloud docker 18.0.1
The issue you are facing:
The connection times out when trying to connect to my server.
Timeout while trying to connect to Nextcloud at https://my.server.domain/status.php.
I don’t even get an access log on my server when trying to connect using the client. Accessing that URL from a web browser works perfectly fine.
I have no setup warnings in the admin overview:
Is this the first time you’ve seen this error? (Y/N): N
I’ve seen it with all versions of Nextcloud including 15, 16, 17
It works fine with versions <= 2.6.0 but breaks from version 2.6.1 of the macOS client
Could this be an issue with the client itself: https://github.com/nextcloud/desktop/issues/1627 ?
Steps to replicate it:
- Install a macOS client with version greater than 2.6.0
- Try to connect to my nextcloud instance
The output of your Nextcloud log in Admin > Logging: https://gist.github.com/chmanie/81d0dc4da58bd158f8c239a6d435b633 (I don’t think there’s anything valuable in here)
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!): The default config.php for docker (I can’t really copy it out of there)
The output of your Apache/nginx/system log in /var/log/____: This is empty somehow for the docker version?