mjson seems to be abandoned, so it has been replaced by

everit-json-schema

src/main/java/com/manolodominguez/openlrae/reporting/ReportsFactory.java

@@ -39,7 +39,7 @@ public class ReportsFactory {
 
     private Logger logger = LoggerFactory.getLogger(ReportsFactory.class);
 
-    private static volatile ReportsFactory instance;
+    private static ReportsFactory instance;
     private SupportedVerbosityLevel verbosity;
 
     /**