PHP-Error -> HTTP 500 when sending Mail

Hey Guys,

I get an error when sending Mails from WebApp (HTTP 500). Apache Error.log sais

[Sun Jan 21 09:46:59.378959 2018] [:error] [pid 1111] [client] PHP Fatal error: Call to undefined function dump() in /usr/share/kopano-webapp/server/includes/core/class.operations.php on line 4003, referer: https://*************/webapp/

It used to work perfectly. Seems to be a Problem related to latest System/Kopano-Updateds.

May you plz check this.

Thank you verry much!


Hi @faithless1108 ,

which version of Kopano Core and WebApp are you running? On which os?

Hi there,

the Versions are…

ii python-kopano all High-level Python bindings for Kopano
ii z-push-backend-kopano 2.3.8+0-0 all Z-Push Kopano backend
ii z-push-kopano 2.3.8+0-0 all Z-Push for Kopano
ii kopano-backup amd64 Utility to back up and restore Kopano stores
ii kopano-client amd64 Kopano MAPI provider library
ii kopano-common amd64 Shared files for Kopano Core services.
ii kopano-contacts amd64 MAPI provider adding contact folders in the addressbook
ii kopano-dagent amd64 E-Mail Delivery Agent for the Kopano Core
ii kopano-gateway amd64 POP3 and IMAP Gateway for the Kopano Core
ii kopano-ical amd64 ICal and CalDAV Gateway for Kopano Core
ii kopano-lang all Translations for Kopano Core components
ii kopano-migration-pst amd64 Utility to import PST files
ii kopano-monitor amd64 Quota Monitor for Kopano Core
ii kopano-presence amd64 kopano presence daemon
ii kopano-search amd64 Indexed search engine for Kopano Core
ii kopano-server amd64 Server component for Kopano Core
ii kopano-server-packages all Metapackage to install the entire Kopano Core stack
ii kopano-spooler amd64 E-mail Spooler for Kopano Core
ii kopano-utils amd64 Admin command-line utils for Kopano Core
ii kopano-webapp all New and improved WebApp for Kopano
ii kopano-webapp-plugin-mdm all Kopano WebApp MDM plugin

And the OS is Debian 8 (8.10)

Thank you!

Hi @faithless1108 ,

we looked into this and at first could not reproduce it. Looking a bit further into this it seems you are missing the following lines in your config.php. Once you have added them you should be able to send mails again.

Hi @fbartels,

i already got these lines in my config.php

if (file_exists('debug.php')){
	// define empty dump function in case we still use it somewhere
	function dump(){}

What now?


@faithless1108 said in PHP-Error -> HTTP 500 when sending Mail:

What now?

Since you are running our supported packages I assume you also have a valid subscription. Therefore I would recommend to get in contact with our support and have someone look at your system.