Cannot use mimic3 from Speech Dispatcher

I have installed mimic3 tts. I can use it from command line. I can access it from browser. So it works alone. But if I configure it into Speech Dispatcher, the dispatcher does not restart. Here is the according log:

[Fri Jan 20 15:00:46 2023 : 296216] speechd: Speech Dispatcher Logging to file /run/speech-dispatcher/.cache/speech-dispatcher/log//speech-dispatcher.log
[Fri Jan 20 15:00:46 2023 : 296317] speechd: Configuration has been read from “/etc/speech-dispatcher/speechd.conf”
[Fri Jan 20 15:00:46 2023 : 296392] speechd: Initializing output module mimic3 with binary /usr/lib/speech-dispatcher-modules/mimic3 and configuration /etc/speech-dispatcher/modules/mimic3-generic.conf
[Fri Jan 20 15:00:46 2023 : 296398] speechd: Output module is logging to file /run/speech-dispatcher/.cache/speech-dispatcher/log//mimic3.log
[Fri Jan 20 15:00:46 2023 : 296654] speechd: Module mimic3 loaded.
[Fri Jan 20 15:00:47 2023 : 629280] speechd: Unknown response from output module!
[Fri Jan 20 15:00:47 2023 : 629527] speechd: Unknown response from output module!
[Fri Jan 20 15:00:47 2023 : 629532] speechd: ERROR: Can’t initialize audio in output module, see reason above.
[Fri Jan 20 15:00:47 2023 : 629622] speechd: Speech Dispatcher Logging to file /run/speech-dispatcher/.cache/speech-dispatcher/log//speech-dispatcher.log
[Fri Jan 20 15:00:47 2023 : 629632] speechd: Error [speechd.c:672]:No speech output modules were loaded - aborting…

the mimic3.log is empty

Kubuntu 22.04
Speech Dispatcher v0.11.1-ubuntu2

Could someone help me?