Update 13.0.2 to any other newer version failed

can not update to any newer release/version since 13.0.2
Every time I try it, installer will hang with an error and nextcloud stay in maintenance mode until I reset it within config.php

Do not know what the reason for this? How can I update to 13.0.6 or 14.0.1 ?

any hint, tips, help is welcome


Current version is 13.0.2.
Update to Nextcloud 13.0.6 available. (channel: “production”)
Following file will be downloaded automatically: https://download.nextcloud.com/server/releases/nextcloud-13.0.6.zip
Check for expected files
Check for write permissions
Enable maintenance mode
Create backup
Parsing response failed. 503 Service Unavailable

Service Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

Additionally, a 503 Service Unavailable error was encountered while trying to use an ErrorDocument to handle the request.

no one can give me any hint or tip how to solve this reproducable failure ?

only this updates make problems, I never had or have any capacity problems !!!

it’s such a trivial mistake that everyone just asks themselves, why doesn’t he solve the problem himself?

Unfortunately I am not able to solve it. I don’t have any solution at the moment.

I gladly accept tips to approach the solution.
Is there any debug option to get more information about the real error in background while trying to upgrade?

I had a similar issue and solved it by downloading the zip-file first and then uploading the unzipped files via FileZilla. The web surface seems to be error prone?:sweat_smile: