java.lang.AssertionError
at com.koushikdutta.async.http.server.AsyncHttpServerResponseImpl.write(AsyncHttpServerResponseImpl.java:56)
at com.koushikdutta.async.Util$2.onWriteable(Util.java:106)
at com.koushikdutta.async.Util.pump(Util.java:120)
at com.koushikdutta.async.http.server.AsyncHttpServerResponseImpl.sendStream(AsyncHttpServerResponseImpl.java:293)
at me.jahnen.libaums.server.http.server.AsyncHttpServer.onRequest(AsyncHttpServer.kt:64)
at com.koushikdutta.async.http.server.AsyncHttpServer.onRequest(AsyncHttpServer.java:62)
at com.koushikdutta.async.http.server.AsyncHttpServer$1$1.onHeadersReceived(AsyncHttpServer.java:159)
at com.koushikdutta.async.http.server.AsyncHttpServerRequestImpl$2.onStringAvailable(AsyncHttpServerRequestImpl.java:75)
at com.koushikdutta.async.LineEmitter.onDataAvailable(LineEmitter.java:45)
at com.koushikdutta.async.Util.emitAllData(Util.java:23)
at com.koushikdutta.async.AsyncNetworkSocket.onReadable(AsyncNetworkSocket.java:152)
at com.koushikdutta.async.AsyncServer.runLoop(AsyncServer.java:821)
at com.koushikdutta.async.AsyncServer.run(AsyncServer.java:658)
at com.koushikdutta.async.AsyncServer.access$800(AsyncServer.java:44)
at com.koushikdutta.async.AsyncServer$14.run(AsyncServer.java:600)
Problem