500 Error by overriding an existing file which is >10MB

Server
12

Hello,

I have found the source of the problem. I am using Plesk as I had mentioned earlier.
Plesk installs default Nginx and Apache together and uses Nginx as proxy.
Nginx has problem to deal with chunked file as it is also commented on SabreDav source code:

lib/composer/sabre/dav/lib/DAV/Server.php
Line 243 - 248

When I uninstall Nginx through Plesk Admin panel then it uses only Apache and the error goes away.

I do not know to who from OwnCloud should I reach this issue?

It should be somehow documented on system requirements or in README.md that using Nginx as proxy will lead to this issue by overriding existing file which is bigger than 10MB.

Thanks to everybody who took time to show me a direction on this thread.

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