I’m so sorry! I found all my screenshots 
They also worked on eos3.2 SDK. And the canberra module error message appears only once on first screenshot (attempt to an audio notification) when the program is still running (no crash exceptions). I found out this by implementing logging on every programm string. 
The next problem is that I was unable to set the program at system startup. I put the startup command in the bash script scr.sh
#!/bin/bash
flatpak run --filesystem=home --socket=x11 --command=/usr/lib/sdk/openjdk/bin/java org.freedesktop.Sdk -jar Desktop.Monitor/Screenshoter.jar
And then copied scr.sh to init.d folder
user@endless1:~$ sudo cp scr.sh /etc/init.d/scr.sh
Made them executable
user@endless1:~$ chmod ugo+x scr.sh
linked to the script for the desired startup mode (5th)
user@endless1:~$ ln -s /etc/init.d/scr.sh /etc/rc5.d/
However, autorun does not occur at the system startup… 
Is this a limitation of the Endless OS or my mistake?
Thank you for support!
UPD:
Anydesk not starting too.