Mobile App no longer opening Collabora Office (Android)

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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • NextCloud 34.0.0
  • Operating system and version (e.g., Ubuntu 24.04):
    • Ubuntu Server 24.04 LTS
  • Web server and version (e.g, Apache 2.4.25):
    • Apache 2.4.58
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • Nginx 1.30.2 (Arch Linux)
  • PHP version (e.g, 8.3):
    • 8.4
  • Is this the first time you’ve seen this error? (Yes / No):
    • Yes
  • When did this problem seem to first start?
    • After Collabora CODE Docker Update
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • HassonIT VM Script
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • Yes, Cloudflare (Not applicable though).

Summary of the issue you are facing:

After a recent update to the Collabora CODE Docker, the official NextCloud app no longer opens up any files for local editing on the phone app. It works flawlessly on the web browser version, even on the phone, but not on the App Version.

I am running NextCloud Office Collabora Edition version 11.0.0
Collabora CODE version 26.04.1.4 (git hash: 7d478de54b)

Don’t know if this is relevant, but I’m also seeing a spam of this error in the logs of NextCloud:


Exceptionfclose(): supplied resource is not a valid stream resource in file ‘/var/www/nextcloud/apps/richdocuments/lib/Service/RemoteService.php’ line 73

Also, if this helps, here’s my Reverse Proxy settings, the ones that would be relevant:

# Large file support
client_max_body_size 0;

# Static files
location ^~ /browser {
    proxy_pass http://Server-IP:9980;
    proxy_set_header Host $host;
}

# WOPI discovery
location ^~ /hosting/discovery {
    proxy_pass http://Server-IP:9980;
    proxy_set_header Host $host;
}

# Capabilities
location ^~ /hosting/capabilities {
    proxy_pass http://Server-IP:9980;
    proxy_set_header Host $host;
}

# Document websocket
location ~ ^/cool/ws$ {
    proxy_pass http://Server-IP:9980;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
    proxy_read_timeout 36000s;
}

# General cool/lool paths
location ~ ^/(c|l)ool {
    proxy_pass http://Server-IP:9980;
    proxy_set_header Host $host;
}

# Admin websocket - internal only
location ^~ /cool/adminws {
    (Redacted allowed IPs)
    deny all;

    proxy_pass http://Server-IP:9980;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
}

# Admin console UI - internal only
location ^~ /browser/dist/admin {
    (Redacted allowed IPs)
    deny all;

    proxy_pass http://Server-IP:9980;
    proxy_set_header Host $host;
}