improve information in exception

(ProjectService.java:1514) - Unknown targetLineIndex: -1
lcsb.mapviewer.common.exception.InvalidArgumentException: Unknown targetLineIndex: -1
        at lcsb.mapviewer.converter.model.celldesigner.types.ModifierTypeUtils.getAnchorPointOnReactionRect(ModifierTypeUtils.java:229)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionFromXml.createLineForModifier(ReactionFromXml.java:497)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionFromXml.parseReactionExtension(ReactionFromXml.java:389)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionFromXml.parseReactionAnnotation(ReactionFromXml.java:236)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionFromXml.getReaction(ReactionFromXml.java:207)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionXmlParser.getReaction(ReactionXmlParser.java:60)
        at lcsb.mapviewer.converter.model.celldesigner.reaction.ReactionCollectionXmlParser.parseXmlReactionCollection(ReactionCollectionXmlParser.java:79)
        at lcsb.mapviewer.converter.model.celldesigner.CellDesignerXmlParser.createModel(CellDesignerXmlParser.java:201)
        at lcsb.mapviewer.converter.ComplexZipConverter.createModel(ComplexZipConverter.java:126)
        at lcsb.mapviewer.services.impl.ProjectService.createModel(ProjectService.java:686)
        at lcsb.mapviewer.services.impl.ProjectService$7.run(ProjectService.java:953)
        at java.lang.Thread.run(Thread.java:748)