Resolved iOS/Mac devices could not open website

[cyxxnet]

We changed our Server and installed Debian 10 with Plesk obsidian.
After that we migrated all websites via Plesk migrator to new server.

on some domains we now have errors wenn opening a php file.

error message: cannot parse response.
We thought it is gzip and deactivated it. Error continues.
We testet hiding header upgrade in nginx. Error continues.
We deactivated all mods in php. Error continues.
But we can open a php file with phpinfo

any suggestions what we also can do?

every device could connect with different Browsers to our websites.
Only Mac and iOS doesn‘t...

logs says on iOS 302 - Site found and display the error message above.

thanks for any help solutions
Kind regards

Jens

 

[cyxxnet]

Fixed it by myself.
Found the Issue.

set http2 in Apache but used nginx proxy.
Updating h2 with activated http2 in Apache caused the error.

kind regards

 

[en_jo]

Thanks cyxxnet ! We did also had this issue. In Settings -> Apache -> the module "http2" was enabled. After disabling it, everything worked just fine.

 

[easytraxbd]

After I set following in Apache directives:
Header unset Upgrade

and following in NGinx directive:
proxy_hide_header Upgrade;

The problem with safari went away.