Installation in gnu/linux fails

I am following the instructions in installed LinceBI in Linux. I use Debian12.
When i run sudo -u lincebi /opt/lincebi/start-pentaho.sh I get

WARNING: Using Java from PATH
DEBUG: _PENTAHO_JAVA_HOME=
DEBUG: _PENTAHO_JAVA=java
/opt/lincebi/start-pentaho.sh: 129: java: not found