Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Stack Overflow by jhaberku
, 2 years ago
an implementation is missing
via GitHub by mathieuleclaire
, 1 year ago
an implementation is missing
via GitHub by lihaoyi
, 2 years ago
an implementation is missing
via Google Groups by rey bumalay, 10 months ago
scala.NotImplementedError: an implementation is missing	at scala.Predef$.$qmark$qmark$qmark(Predef.scala:252)	at water.fvec.DataFrame.keys(DataFrame.scala:51)	at water.fvec.DataFrame.keys(DataFrame.scala:12)	at water.api.FrameV2.(FrameV2.java:193)	at water.api.FramesBase.fillFromImpl(FramesBase.java:57)	at water.api.FramesHandler.list(FramesHandler.java:105)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at water.api.Handler.handle(Handler.java:57)	at water.api.RequestServer.handle(RequestServer.java:576)	at water.api.RequestServer.serve(RequestServer.java:536)	at water.NanoHTTPD$HTTPSession.run(NanoHTTPD.java:433)	at java.lang.Thread.run(Thread.java:745)