We have jenkins 2.72 (deployed into tomcat )and we installed Bitbucket pull request builder 1.4.26 and configured as per the following link https://github.com/nishio-dens/bitbucket-pullrequest-builder-plugin

Now, after the configuration it is not running build using auto detection of PRs when I check the tomcat log I find some authetication error (Even though the user is good able to checkout in another job just this plugin is not working, )- Pls suggest

05-Sep-2017 11:33:01.589 INFO jenkins.util.Timer [#1] bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.BitbucketPullRequestsBuilder.run Build Start.
05-Sep-2017 11:33:01.589 INFO jenkins.util.Timer [#1] bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.BitbucketRepository.getTargetPullRequests Fetch PullRequests.
05-Sep-2017 11:33:02.509 INFO jenkins.util.Timer [#1] org.apache.commons.httpclient.auth.AuthChallengeProcessor.selectAuthScheme basic authentication scheme selected
05-Sep-2017 11:33:02.509 INFO jenkins.util.Timer [#1] org.apache.commons.httpclient.HttpMethodDirector.processWWWAuthChallenge Failure authenticating with BASIC 'Bitbucket.org HTTP'@bitbucket.org:443
05-Sep-2017 11:33:02.509 WARNING jenkins.util.Timer [#1] bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.bitbucket.BitbucketApiClient.getPullRequests invalid pull request response.
java.io.EOFException: No content to map to Object due to end of input
at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2775)
at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2718)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1863)
at bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.bitbucket.BitbucketApiClient.parsePullRequestJson(BitbucketApiClient.java:156)
at bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.bitbucket.BitbucketApiClient.getPullRequests(BitbucketApiClient.java:42)
at bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.BitbucketRepository.getTargetPullRequests(BitbucketRepository.java:53)
at bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.BitbucketPullRequestsBuilder.run(BitbucketPullRequestsBuilder.java:30)
at bitbucketpullrequestbuilder.bitbucketpullrequestbuilder.BitbucketBuildTrigger.run(BitbucketBuildTrigger.java:145)
at hudson.triggers.Trigger.checkTriggers(Trigger.java:278)
at hudson.triggers.Trigger$Cron.doRun(Trigger.java:226)
at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:51)
at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:58)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
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:748)