Hello,
what is your OS exactly ?
As you can see here we are trying everyday to install ERP5 on Debian 9 and 10 (search for tests ERP5.StandaloneDeploymentScriptTest-Debian.Stretch and ERP5.StandaloneDeploymentScriptTest-Debian.Buster).
Also can you look at /opt/slapos/log/slapos-node-software.log and report any error there ?
Thomas.