Got error when running sbt about crawler HOT 5 CLOSED

[info] Loading project definition from /Users/myuser/crawler/project
Missing bintray credentials /Users/myuser/.bintray/.credentials. Some bintray features depend on this.
java.lang.RuntimeException: Setting value cannot be null: {file:/Users/myuser/crawler/}/*:version
        at scala.sys.package$.error(package.scala:27)
        at sbt.EvaluateSettings$INode.setValue(INode.scala:143)
        at sbt.EvaluateSettings$MixedNode.evaluate0(INode.scala:175)
        at sbt.EvaluateSettings$INode.evaluate(INode.scala:135)
        at sbt.EvaluateSettings$$anonfun$sbt$EvaluateSettings$$submitEvaluate$1.apply$mcV$sp(INode.scala:69)
        at sbt.EvaluateSettings.sbt$EvaluateSettings$$run0(INode.scala:78)
        at sbt.EvaluateSettings$$anon$3.run(INode.scala:74)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
[error] Setting value cannot be null: {file:/Users/myuser/crawler/}/*:version
[error] Use 'last' for the full log.
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?

organization := "io.github"
name := "crawler"
version := "1.0"

crossScalaVersions := Seq("2.11.7", "2.10.5")
scalaVersion := crossScalaVersions.value.head
scalacOptions := Seq("-deprecation", "-unchecked", "-feature")

libraryDependencies ++= Seq (
    "net.sourceforge.htmlunit" % "htmlunit" % "2.15"
  , "org.specs2" %% "specs2-core" % "3.6.2" % "test"
)

resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"

enablePlugins(GitVersioning)
git.useGitDescribe := true // figure out version from last tag

// required for release to bintray
licenses += ("Apache-2.0", url("http://www.apache.org/licenses/LICENSE-2.0"))