EventCoreference install fails on kafSaxParser unknown method / variable

Input: Called installation script according to instructions: ./install.sh
Problem: build fails on unidentified variable fileName in kafSaxParser. (POM takes version 3.1.2)
Stack trace:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.760 s
[INFO] Finished at: 2018-03-28T15:11:37+02:00
[INFO] Final Memory: 23M/436M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0:compile (default-compile) on project EventCoreference: Compilation failure: Compilation failure: 
[ERROR] /home/$UNAME/EventCoreference/src/main/java/eu/newsreader/eventcoreference/naf/StructuredEventObjects.java:[151,28] error: cannot find symbol
[ERROR] 
[ERROR] could not parse error message:   symbol:   variable fileName
[ERROR]   location: variable kafSaxParser of type KafSaxParser
[ERROR] /home/$UNAME/EventCoreference/src/main/java/eu/newsreader/eventcoreference/naf/GetSemFromNaf.java:461: error: cannot find symbol
[ERROR]                 if (kafSaxParser.fileName.isEmpty()) {
[ERROR]                                 ^
[ERROR] 
[ERROR] could not parse error message:   symbol:   variable fileName
[ERROR]   location: variable kafSaxParser of type KafSaxParser
[ERROR] /home/$UNAME/EventCoreference/src/main/java/eu/newsreader/eventcoreference/naf/GetSemFromNaf.java:465: error: cannot find symbol
[ERROR]                      baseUrl = ResourcesUri.nwrdata + project + "/" + kafSaxParser.fileName + ID_SEPARATOR;
[ERROR]                                                                                   ^
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0:compile (default-compile) on project EventCoreference: Compilation failure
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:993)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:345)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:191)
    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 org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
    at org.apache.maven.plugin.AbstractCompilerMojo.execute (AbstractCompilerMojo.java:429)
    at org.apache.maven.plugin.CompilerMojo.execute (CompilerMojo.java:110)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:993)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:345)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:191)
    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 org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
ADAH-EviDENce / NewsReader

EventCoreference install fails on kafSaxParser unknown method / variable #18
