Sorry, I hadn't thought at the command line!
It's only a permission problem. This is the error message: "[13872:0608/160438.344435:FATAL:setuid_sandbox_host.cc(157)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /opt/Sozi/chrome-sandbox is owned by root and has mode 4755.
Running "chmod 4755 /opt/Sozi/chrome-sandbox" the problem is fixed and the program works correctly.