Roundcube install failing out of the box

Apps and Virtualization
1

This has got to be simple but I’m just missing something.
Truenas 25.04.2.3
Roundcube app Version: v1.3.9

I specified host paths for the 4 volumes. The vols were owned by apps:apps when I installed. The db volume I select automatic permissions.

When I go to webui

Oops… something went wrong!

An internal error has occurred. Your request cannot be processed at this time.
For administrators: Please check the application and/or server error logs for more information

Roundcube logs:
Application Name:roundcubeContainer ID:bc…ee
2025-09-19 19:07:20.561114+00:00roundcubemail not found in /var/www/html - copying now…
2025-09-19 19:07:20.648949+00:00Complete! ROUNDCUBEMAIL has been successfully copied to /var/www/html
2025-09-19 19:07:20.655300+00:00wait-for-it.sh: waiting 30 seconds for postgres:5432
2025-09-19 19:07:20.657629+00:00wait-for-it.sh: postgres:5432 is available after 0 seconds
2025-09-19 19:07:20.659770+00:00Write root config to /var/www/html/config/config.inc.php
2025-09-19 19:07:20.660874+00:00Write Docker config to /var/www/html/config/config.docker.inc.php
2025-09-19 19:07:21.237257+00:00Creating database schema… [OK]
2025-09-19 19:07:21.283263+00:00AH00558: apache2: Could not reliably determine the server’s fully qualified domain name, using f…b::3. Set the ‘ServerName’ directive globally to suppress this message
2025-09-19 19:07:21.289209+00:00AH00558: apache2: Could not reliably determine the server’s fully qualified domain name, using f…b::3. Set the ‘ServerName’ directive globally to suppress this message
2025-09-19 19:07:21.305418+00:00[Fri Sep 19 19:07:21.305305 2025] [mpm_prefork:notice] [pid 1:tid 1] AH00163: Apache/2.4.65 (Debian) PHP/8.4.12 configured – resuming normal operations
2025-09-19 19:07:21.305445+00:00[Fri Sep 19 19:07:21.305317 2025] [core:notice] [pid 1:tid 1] AH00094: Command line: ‘apache2 -D FOREGROUND’
2025-09-19 19:07:22.633627+00:00127.0.0.1 - - [19/Sep/2025:19:07:22 +0000] “GET /?ping=ping HTTP/1.1” 200 1134 “-” “curl/8.14.1”
2025-09-19 19:07:29.062465+00:00192.168.x.y - - [19/Sep/2025:19:07:29 +0000] “GET / HTTP/1.1” 200 925 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36”
2025-09-19 19:07:31.916169+00:00192.168.x.y - - [19/Sep/2025:19:07:31 +0000] “GET / HTTP/1.1” 200 924 “-” “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36”

I could share the postgres logs if it seemed relevant but having looked at them, there are no issues reported.

Any assistance is much appreciated. Cheers!

2

I’m seeing this in the apache errors log when I try and browse the site:
DB Error: SQLSTATE[HY000] [2002] No such file or directory in /var/www/html/program/lib/Roundcube/rcube_db.php on line 201 (GET /)

my connect string looks something like
$config[‘db_dsnw’] = ‘pgsql://roundcube:@postgres:5432/roundcube’;

but when i try and connect from php it seems like its connecting
root@mycontainer:/var/www/html# php -r “new PDO(‘pgsql:host=postgres;port=5432;dbname=roundcube’, ‘roundcube’, ‘’); echo ‘Connected successfully’;”
Connected successfullyroot@mycontainer:/var/www/html#

i’ve about exhausted my knowledge on things to try, even the usual AI suspects are not helping much at this point. Thanks for looking.