Can't upgrade, failure for Confluence

[Jasper]

[root@atlassian atlassian]# ./atlassian-confluence-6.15.4-x64.bin
Unpacking JRE ...
Starting Installer ...

This will install Confluence 6.15.4 on your computer.
OK [o, Enter], Cancel [c]
./atlassian-confluence-6.15.4-x64.bin: regel 664: 10547 Geëlimineerd $INSTALL4J_JAVA_PREFIX "$app_java_home/bin/java" -Dinstall4j.jvmDir="$app_java_home" -Dexe4j.moduleName="$prg_dir/$progname" -Dexe4j.totalDataLength=620675094 -Dinstall4j.cwd="$old_pwd" "-Dinstall4j.executionMode=console" "-Dsun.java2d.noddraw=true" "$vmov_1" "$vmov_2" "$vmov_3" "$vmov_4" "$vmov_5" $INSTALL4J_ADD_VM_PARAMS -classpath "$local_classpath" com.install4j.runtime.launcher.UnixLauncher launch 0 0 0 com.install4j.runtime.installer.Installer "$@"


I'm on CentOS

[Nic Brough -Adaptavist-]

There's no warning or errors we can work with here, it looks like the installer is working fine. What is the actual problem or failure?