Error when running reports: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser

Issue description

When trying to run any report on a server, the following error is thrown:

java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser 
Error Trace 
 
com.jaspersoft.jasperserver.api.JSException: java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport(EngineServiceImpl.java:628) at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.executeReportUnitRequest(EngineServiceImpl.java:1953) at com.jaspersoft.jasperserver.api.engine.jasperreports.domain.impl.ReportUnitRequest.execute(ReportUnitRequest.java:67) at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.execute(EngineServiceImpl.java:505) at sun.reflect.GeneratedMethodAccessor822.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80) at com.jaspersoft.ji.license.LicenseCheckAspect.runReport(LicenseCheckAspect.java:139) at sun.reflect.GeneratedMethodAccessor821.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498)
 

Troubleshooting

 
This error is normally associated with a JVM not being started on a Linux machine in AWT headless mode. JasperReports Server doesn’t provide a virtual X frame buffer on Linux. To prevent Java from trying to connect to an X-Server for image processing in JRS, please modify your application server's startup script to include the following JAVA_OPTS 
 
-Djava.awt.headless=true 
 
make sure to restart the server after this modification before testing the report again.
 
The other possible causes of this error are: 
 
- one or more jar files are missing from Jasperreports Server installation for some reason 
- one or more default system fonts are not accessible in this environment 
 
I'd start by checking if all jars are present in the <js-webapp>/WEB-INF/libs folder by comparing the contents of it with the same folder in a working environment. 
 
If that doesn't help, here is a stackoverflow.com thread where people were having the same error and provide a couple of solutions that worked: 

_______________
Ref. case #00068653

Feedback