When I model process with Script Task I can see Errors in my Server Log.
11:44:47,059 ERROR [org.kie.workbench.common.stunner.bpmn.backend.indexing.AbstractBpmnFileIndexer] (Thread-274) Error: Process Compilation error The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files The type java.lang.String cannot be resolved. It is indirectly referenced from required .class files Only a type can be imported. org.kie.api.runtime.process.CaseAssignment resolves to a package Only a type can be imported. org.kie.api.runtime.process.CaseData resolves to a package Only a type can be imported. org.drools.core.util.KieFunctions resolves to a package Implicit super constructor Object() is undefined for default constructor. Must define an explicit constructor org.kie.api.runtime.process.ProcessContext cannot be resolved to a type Exception cannot be resolved to a type org.kie.api.runtime.process.ProcessContext cannot be resolved to a type System.out cannot be resolved to a type 11:44:47,059 ERROR [org.kie.workbench.common.stunner.bpmn.backend.indexing.AbstractBpmnFileIndexer] (Thread-274) Error: Unable to generate action invoker. Implicit super constructor Object() is undefined for default constructor. Must define an explicit constructor org.jbpm.process.instance.impl.Action cannot be resolved to a type org.drools.core.spi.CompiledInvoker cannot be resolved to a type org.kie.api.runtime.process.ProcessContext cannot be resolved to a type Exception cannot be resolved to a type String cannot be resolved to a type