[email protected]:~$ electron-ssr
[5388:0415/233033.798417: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/electron-ssr/chrome-sandbox is owned by root and has mode 4755.
sudo chmod 4755 /opt/electron-ssr/chrome-sandbox