Exception:

java.lang.NoSuchMethodError: org.hsqldb.DatabaseURL.parseURL(Ljava/lang/String;ZZ)Lorg/hsqldb/persist/HsqlProperties;
        at org.hsqldb.jdbc.JDBCDriver.getConnection(Unknown Source)
        at org.hsqldb.jdbc.JDBCDriver.connect(Unknown Source)
        at java.sql.DriverManager.getConnection(DriverManager.java:664)
        at java.sql.DriverManager.getConnection(DriverManager.java:208)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.install4j.runtime.installer.helper.Install4jClassLoader$CustomCodeInvoker.invoke(Install4jClassLoader.java:165)
        at com.install4j.runtime.installer.helper.Install4jClassLoader.invokeInCustomClassLoader(Install4jClassLoader.java:156)
        at com.install4j.runtime.beans.actions.jdbc.AbstractJdbcAction.createConnection(AbstractJdbcAction.java:139)
        at com.install4j.runtime.beans.actions.jdbc.AbstractJdbcAction.withConnection(AbstractJdbcAction.java:201)
        at com.install4j.runtime.beans.actions.jdbc.AbstractJdbcAction.withStatement(AbstractJdbcAction.java:176)
        at com.install4j.runtime.beans.actions.jdbc.AbstractJdbcAction.withResultSet(AbstractJdbcAction.java:153)
        at com.install4j.runtime.beans.actions.jdbc.CheckJdbcConnectionAction.executeJdbcCall(CheckJdbcConnectionAction.java:32)
        at com.install4j.runtime.beans.actions.jdbc.AbstractJdbcAction.execute(AbstractJdbcAction.java:95)
        at com.install4j.runtime.beans.actions.SystemInstallOrUninstallAction.install(SystemInstallOrUninstallAction.java:29)
        at com.install4j.runtime.installer.ContextImpl$7.executeAction(ContextImpl.java:1668)
        at com.install4j.runtime.installer.ContextImpl$7.fetchValue(ContextImpl.java:1659)
        at com.install4j.runtime.installer.ContextImpl$7.fetchValue(ContextImpl.java:1656)
        at com.install4j.runtime.installer.helper.comm.actions.FetchObjectAction.execute(FetchObjectAction.java:14)
        at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionDirect(HelperCommunication.java:274)
        at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionInt(HelperCommunication.java:249)
        at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionChecked(HelperCommunication.java:187)
        at com.install4j.runtime.installer.helper.comm.HelperCommunication.fetchObjectChecked(HelperCommunication.java:170)
        at com.install4j.runtime.installer.ContextImpl.performActionIntStatic(ContextImpl.java:1656)
        at com.install4j.runtime.installer.InstallerContextImpl.performActionInt(InstallerContextImpl.java:151)
        at com.install4j.runtime.installer.ContextImpl.performAction(ContextImpl.java:1103)
        at com.install4j.runtime.installer.controller.Controller.executeAction(Controller.java:368)
        at com.install4j.runtime.installer.controller.Controller.executeActions(Controller.java:334)
        at com.install4j.runtime.installer.controller.Controller.handleCommand(Controller.java:195)
        at com.install4j.runtime.installer.controller.Controller.start(Controller.java:94)
        at com.install4j.runtime.installer.Installer.runInProcess(Installer.java:59)
        at com.install4j.runtime.installer.Installer.main(Installer.java:46)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:65)
        at com.install4j.runtime.launcher.UnixLauncher.main(UnixLauncher.java:57)

System properties:

java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=/home/iticdx/Knowage-6_2_0-CE-Installer-Unix-20180809.sh
sun.boot.library.path=/usr/lib/jvm/java-8-oracle/jre/lib/amd64
java.vm.version=25.181-b13
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
path.separator=:
java.vm.name=Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg=sun.io
user.country=US
sun.java.launcher=SUN_STANDARD
sun.os.patch.level=unknown
install4j.exeDir=/home/iticdx/
java.vm.specification.name=Java Virtual Machine Specification
user.dir=/home/iticdx/Knowage-6_2_0-CE-Installer-Unix-20180809.sh.19077.dir
java.runtime.version=1.8.0_181-b13
java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment
i4jv=0
java.endorsed.dirs=/usr/lib/jvm/java-8-oracle/jre/lib/endorsed
os.arch=amd64
java.io.tmpdir=/tmp
line.separator=

java.vm.specification.vendor=Oracle Corporation
os.name=Linux
exe4j.totalDataLength=2991514838
sun.java2d.noddraw=true
sun.jnu.encoding=UTF-8
java.library.path=/home/iticdx/Knowage-6_2_0-CE-Installer-Unix-20180809.sh.19077.dir/user::/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
java.specification.name=Java Platform API Specification
java.class.version=52.0
sun.management.compiler=HotSpot 64-Bit Tiered Compilers
os.version=4.15.0-36-generic
i4j.vpt=true
install4j.cwd=/home/iticdx
user.home=/root
user.timezone=Etc/UTC
java.awt.printerjob=sun.print.PSPrinterJob
file.encoding=UTF-8
install4j.jvmDir=/usr/lib/jvm/java-8-oracle/jre
java.specification.version=1.8
java.class.path=i4jruntime.jar
user.name=root
java.vm.specification.version=1.8
sun.java.command=com.install4j.runtime.launcher.UnixLauncher launch 0   com.install4j.runtime.installer.Installer -c
java.home=/usr/lib/jvm/java-8-oracle/jre
sun.arch.data.model=64
user.language=en
java.specification.vendor=Oracle Corporation
awt.toolkit=sun.awt.X11.XToolkit
java.vm.info=mixed mode
java.version=1.8.0_181
java.ext.dirs=/usr/lib/jvm/java-8-oracle/jre/lib/ext:/usr/java/packages/lib/ext
sun.boot.class.path=/usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/jre/lib/rt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/usr/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/classes
java.awt.headless=true
install4j.appDir=/home/iticdx/
java.vendor=Oracle Corporation
file.separator=/
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
sun.font.fontmanager=sun.awt.X11FontManager
sun.io.unicode.encoding=UnicodeLittle
sun.cpu.endian=little
install4j.showProxyConfig=true
install4j.systemLanguage=en
install4j.keepLog=true
sun.cpu.isalist=