here is the error message:

 
10:44:50 Bitbucket Approve: 409 - Conflict*

10:44:50 ERROR: Build step failed with exception

10:44:50*

java.lang.IllegalStateException: closed*

10:44:50* at com.squareup.okhttp.internal.http.HttpConnection$FixedLengthSource.read(HttpConnection.java:455)

10:44:50 at okio.Buffer.writeAll(Buffer.java:594)

10:44:50 at okio.RealBufferedSource.readByteArray(RealBufferedSource.java:87)

10:44:50 at com.squareup.okhttp.ResponseBody.bytes(ResponseBody.java:56)

10:44:50 at com.squareup.okhttp.ResponseBody.string(ResponseBody.java:82)

10:44:50 at org.jenkinsci.plugins.bitbucket_approve.BitbucketApprover.perform(BitbucketApprover.java:106)

10:44:50 at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)

10:44:50 at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:736)

10:44:50 at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:682)

10:44:50 at hudson.model.Build$BuildExecution.post2(Build.java:186)

10:44:50 at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:627)

10:44:50 at hudson.model.Run.execute(Run.java:1754)

10:44:50 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)

10:44:50 at hudson.model.ResourceController.execute(ResourceController.java:97)

10:44:50 at hudson.model.Executor.run(Executor.java:419)

10:44:50 Build step 'Approve commit on Bitbucket' marked build as failure