VictronConnect x86_64_v6.20beta15 doesn't start on Ubuntu 24.04.2 LTS

$ cat /tmp/VictronConnect.log
/tmp/.mount_VictrozxEblQ//bin/VictronConnect: error while loading shared libraries: libQt6Mqtt.so.6: cannot open shared object file: No such file or directory

x86_64_v6.19 works fine, on the other hand.

Still the same problem with v6.20beta16

Perhaps there is a solution here?