exception when running annotations

2017-08-23 14:04:51,243 ERROR [Thread-26] (ProjectService.java:1514) - java.lang.NullPointerException at lcsb.mapviewer.annotation.services.annotators.ElementAnnotator.setDescription(ElementAnnotator.java:232) at lcsb.mapviewer.annotation.services.annotators.EntrezAnnotator.annotateElement(EntrezAnnotator.java:193) at lcsb.mapviewer.annotation.services.annotators.EntrezAnnotator.annotateElement(EntrezAnnotator.java:165) at lcsb.mapviewer.annotation.services.ModelAnnotator.annotateModel(ModelAnnotator.java:290) at lcsb.mapviewer.annotation.services.ModelAnnotator.performAnnotations(ModelAnnotator.java:211) at lcsb.mapviewer.services.impl.ProjectService.createModel(ProjectService.java:786) at lcsb.mapviewer.services.impl.ProjectService$7.run(ProjectService.java:953) at java.lang.Thread.run(Thread.java:748)