angular realtime (JS) stack trace

gistfile1.txt

Unhandled exception 
java.lang.RuntimeException: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(java.util.Map), (java.lang.String)] of the method io.vertx.core.json.JsonObject.<init> for argument types [jdk.nashorn.internal.runtime.Undefined]
        at jdk.nashorn.internal.runtime.arrays.IteratorAction.apply(IteratorAction.java:116)
        at jdk.nashorn.internal.objects.NativeArray.forEach(NativeArray.java:1607)
        at jdk.nashorn.internal.scripts.Script$Recompilation$182$1566AA$\^eval\_#88\!17\^eval\_.L:1$loadData$L:47(server.js:83)
        at jdk.nashorn.internal.scripts.Script$Recompilation$176$19479A$\^eval\_#88\!17\^eval\_.L:1$MongoClient$dropCollection$L:471(vertx-mongo-js/mongo_client.js:473)
        at io.vertx.core.Handler$$NashornJavaAdapter.handle(Unknown Source)
        at io.vertx.ext.mongo.impl.MongoClientImpl.lambda$null$33(MongoClientImpl.java:324)
        at io.vertx.ext.mongo.impl.MongoClientImpl$$Lambda$12/463812514.handle(Unknown Source)
        at io.vertx.core.impl.ContextImpl.lambda$wrapTask$3(ContextImpl.java:314)
        at io.vertx.core.impl.ContextImpl$$Lambda$7/866488267.run(Unknown Source)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(java.util.Map), (java.lang.String)] of the method io.vertx.core.json.JsonObject.<init> for argument types [jdk.nashorn.internal.runtime.Undefined]
        at jdk.internal.dynalink.beans.OverloadedMethod.throwAmbiguousMethod(OverloadedMethod.java:224)
        at jdk.nashorn.internal.scripts.Script$Recompilation$171$1099A$\^eval\_#88\!17\^eval\_.L:1$convParamJsonObject(vertx-js/util/utils.js:22)
        at jdk.nashorn.internal.scripts.Script$Recompilation$185$3584AAA$\^eval\_#88\!17\^eval\_.L:1$MongoClient$insert(vertx-mongo-js/mongo_client.js:96)
        at jdk.nashorn.internal.scripts.Script$Recompilation$183$2339AJA$\^eval\_#88\!17\^eval\_.L:1$loadData$L:47$L:83(server.js:84)
        at jdk.nashorn.internal.objects.NativeArray$9.forEach(NativeArray.java:1604)
        at jdk.nashorn.internal.runtime.arrays.IteratorAction.apply(IteratorAction.java:110)
        ... 12 more