Clojure Verticle Error

gistfile1.clj

Unexpected exception in Clojure verticle
java.lang.RuntimeException: No such var: eb/on-message, compiling:(clojure/YYYY/XXXX.clj:62:1)
        at clojure.lang.Compiler.analyze(Compiler.java:6464)
        at clojure.lang.Compiler.analyze(Compiler.java:6406)
        at clojure.lang.Compiler$InvokeExpr.parse(Compiler.java:3665)
        at clojure.lang.Compiler.analyzeSeq(Compiler.java:6646)
        at clojure.lang.Compiler.analyze(Compiler.java:6445)
        at clojure.lang.Compiler.analyze(Compiler.java:6406)
        at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:5782)
        at clojure.lang.Compiler$FnMethod.parse(Compiler.java:5217)
        at clojure.lang.Compiler$FnExpr.parse(Compiler.java:3846)
        at clojure.lang.Compiler.analyzeSeq(Compiler.java:6642)
        at clojure.lang.Compiler.analyze(Compiler.java:6445)
        at clojure.lang.Compiler.eval(Compiler.java:6700)
        at clojure.lang.Compiler.load(Compiler.java:7130)
        at clojure.lang.RT.loadResourceScript(RT.java:370)
        at clojure.lang.RT.loadResourceScript(RT.java:357)
        at clojure.lang.RT.loadResourceScript(RT.java:349)
        at vertx.core$_start_verticle.invoke(core.clj:46)
        at clojure.lang.Var.invoke(Var.java:383)
        at org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke(ClojureRuntimeShimImpl.java:106)
        at org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke(ClojureRuntimeShimImpl.java:99)
        at io.vertx.lang.clojure.ClojureVerticleFactory$ClojureVerticle.start(ClojureVerticleFactory.java:84)
        at org.vertx.java.platform.Verticle.start(Verticle.java:82)
        at org.vertx.java.platform.impl.DefaultPlatformManager$21.run(DefaultPlatformManager.java:1758)
        at org.vertx.java.core.impl.DefaultContext$3.run(DefaultContext.java:175)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:370)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: No such var: eb/on-message
        at clojure.lang.Util.runtimeException(Util.java:221)
        at clojure.lang.Compiler.resolveIn(Compiler.java:6914)
        at clojure.lang.Compiler.resolve(Compiler.java:6884)
        at clojure.lang.Compiler.analyzeSymbol(Compiler.java:6845)
        at clojure.lang.Compiler.analyze(Compiler.java:6427)
        ... 27 more