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  1. Jenkins
  2. JENKINS-58893

ci.jenkins.io returns 404 when accessing BO for the very first time


    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Component/s: blueocean-plugin
    • Labels:
    • Environment:
      Jenkins ver. 2.176.2
    • Similar Issues:


      I've seem recently this 404 issue in one of the jenkins instances I do manage, but also in the https://ci.jenkins.io one.


      Error message:

      HTTP ERROR 403Problem accessing /blue/rest/classes/. 
      Reason:    No valid crumb was included in the requestPowered by Jetty:// 9.4.z-SNAPSHOT



      But it works perfectly fine when accessing the traditional view:


      How to reproduce locally?

      • Open an incognito browser
      • Open a BO URL
      • Repeat the same with the traditional view


      • Refresh
      • Use -Djenkins.displayurl.provider=org.jenkinsci.plugins.displayurlapi.ClassicDisplayURLProvider

      Even though there is a workaround I'd say it's not a great user experience getting 404 when accessing to the build link which it's provided in the Pull Request with the GitHub check `continuous-integration/jenkins/pr-merge`.

      In my case, I did use the feature property to use the traditional view but eventually I'd like to move back to the BO view.

      Any hints whether this behavior happened previously or is it a regression somehow with the latest release?


      In my case, I did enable the traditional view by default with 



          v2v Victor Martinez created issue -
          v2v Victor Martinez made changes -
          Field Original Value New Value
          Summary ci.jenkins.io return 404 when accessing BO for the very first time ci.jenkins.io returns 404 when accessing BO for the very first time
          jglick Jesse Glick made changes -
          Project Infrastructure [ 10301 ] Jenkins [ 10172 ]
          Key INFRA-2206 JENKINS-58893
          Workflow classic default workflow [ 238590 ] JNJira + In-Review [ 238629 ]
          Component/s blueocean-plugin [ 21481 ]
          Component/s ci.jenkins.io [ 23924 ]


            • Assignee:
              v2v Victor Martinez
            • Votes:
              1 Vote for this issue
              4 Start watching this issue


              • Created: