Can't open documents after last update Nextcloud AIO

[KOCTET-SPB]

Describe the bug
Can't open documents after last update nextcloud:
"Failed to establish socket connection or socket connection closed unexpectedly. The reverse proxy might be misconfigured, please contact the administrator. For more info on proxy configuration please checkout https://sdk.collaboraonline.com/docs/installation/Proxy_settings.html"
To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Client details:

• OS: Android 12, Windows 11
• Browser Chrome
• Version [e.g. 22]
• Device: Xiaomi 9, desktop

Server details

Operating system:
Ubuntu 22.04
Web server:
Apache/2.4.52
Database:

PHP version:

Nextcloud version:
Nextcloud AIO Nextcloud Hub 8 (29.0.4)
Version of the richdocuments app
Nextcloud Office 8.4.3
Version of Collabora Online
Collabora Online Development Edition 24.04.5.2 ca2ed20
Configuration of the richdocuments app

Insert the output of ./occ config:list richdocuments (or equivalent adapted for your runtime environment)

{   
    "apps": {        
        "richdocuments": {
            "types": "prevent_group_restriction",
            "public_wopi_url": "https:\/\/cloud.mydomen.com",
            "doc_format": "ooxml",
            "wopi_url": "https:\/\/cloud.mydomen.com\/",
            "wopi_callback_url": "",
            "enabled": "yes",
            "installed_version": "8.4.3",
            "disable_certificate_verification": "",
            "wopi_allowlist": "bbb.aaa.yyy.xxx,127.0.0.1\/8,192.168.0.0\/16,172.16.0.0\/12,10.0.0.0\/8,fd00::\/8,::1,cloud.mydomen.com,192.168.1.201,0.0.0.0\/0"
        }
    }
}

Logs

Nextcloud log (data/nextcloud.log)

Ошибка | index | ExceptionCall to a member function xpath() on bool in file '/var/www/html/custom_apps/richdocuments/lib/WOPI/Parser.php' line 56

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[joshtrichards]

Are you using the AIO CODE or Built-in CODE (aka: richdocumentscode)?

[KOCTET-SPB]

Are you using the AIO CODE or Built-in CODE (aka: richdocumentscode)?
I use what comes with the AIO

[joshtrichards]

Additional context: nextcloud/all-in-one#5042

[fcharlaix-opendsi]

I have the issue on a non Docker/AIO installation with Nextcloud 29.0.4 and Nextcloud Office 8.4.3.

simplexml_load_string can return false, this was checked before the cleanup.
This seems to return false because $discovery is null for some reason in my case.
If I go into the settings and save the address (whiteout modifying anything) this solves the issue.

[KOCTET-SPB]

I have the issue on a non Docker/AIO installation with Nextcloud 29.0.4 and Nextcloud Office 8.4.3.

simplexml_load_string can return false, this was checked before the cleanup. This seems to return false because $discovery is null for some reason in my case. If I go into the settings and save the address (whiteout modifying anything) this solves the issue.

I saved different addresses several times. The error in the log has disappeared, but the documents do not open, the same error:
"Failed to establish socket connection or socket connection closed unexpectedly. The reverse proxy might be misconfigured, please contact the administrator. For more info on proxy configuration please checkout"

[KOCTET-SPB]

Update to Nextcloud Office 8.4.4:
I saved the addresses several times, after which the documents open.
Works fine now. Thank you