Mark Waite added a comment - 2021-03-31 03:53 Please follow the instructions in the Jenkins 2.277.1 upgrade guide and in the table to div layout migration guide to investigate the issue, including Disable any plugins that are no longer in use, particularly if those plugins are no longer distributed on the Jenkins update site such as analysis-core , checkstyle , and findbugs . If that does not bring you to a complete solution, then include the detailed information described here in this issue.

Mark Waite added a comment - 2021-03-31 03:58 Refer also to JENKINS-65180 in case you have the TFS plugin installed. It describes a similar error message.

Aleksandr added a comment - 2021-03-31 03:59 Mark, thanks for your answer. Is it possible to find the reason more precisely? Maybe you can enable more advanced logging? The first thing I did to analyze the problem was to disable many plugins, including all obsolete ones. Please pay attention:  The error disappears if you remove the SCM polling schedule  

Aleksandr added a comment - 2021-03-31 04:09 - edited JENKINS_HOST=username:password@myhost.com:port curl -sSL "http: //$JENKINS_HOST/pluginManager/api/xml?depth=1&xpath= /*/*/ shortName| /*/*/ version&wrapper=plugins" | perl -pe 's/.*?<shortName>([\w-]+).*?<version>([^<]+)()(<\/\w+>)+/\1 \2\n/g' |sed 's/ /:/'   Result:  config-file-provider:3.7.0 authentication-tokens:1.4 pipeline-build-step:2.13 matrix-project:1.18 windows-slaves:1.7 antisamy-markup-formatter:2.1 jsch:0.1.55.2 cloudbees-folder:6.15 xcode-plugin:2.0.14 external-monitor-job:1.7 docker-commons:1.17 pipeline- rest -api:2.19 pipeline-github-lib:1.0 sse-gateway:1.24 pam-auth:1.6 ownership:0.13.0 matrix-combinations-parameter:1.3.1 workflow-multibranch:2.23 locale:1.4 javadoc:1.6 built-on-column:1.1 job-restrictions:0.8 pipeline-stage-step:2.5 pipeline-model-api:1.8.4 plain-credentials:1.7 pipeline-model-definition:1.8.4 mapdb-api:1.0.9.0 blueocean-git-pipeline:1.24.5 job-dsl:1.77 credentials:2.3.15 workflow-basic-steps:2.23 workflow-cps:2.90 ldap:2.4 durable-task:1.35 mailer:1.34 jira-publisher:1.9 text-finder:1.15 ant:1.11 envinject-api:1.7 envinject:2.4.0 simple-theme-plugin:0.6 favorite:2.3.3 pipeline-stage-view:2.19 branch-api:2.6.3 text-finder-run-condition:0.1 sshd:3.0.3 pipeline-milestone-step:1.3.2 gradle:1.36 ssh-credentials:1.18.2 role-strategy:3.1.1 lockable-resources:2.10 resource-disposer:0.15 handlebars:3.0.8 pipeline-input-step:2.12 blueocean-bitbucket-pipeline:1.24.5 blueocean-personalization:1.24.5 blueocean-pipeline-editor:1.24.5 blueocean-autofavorite:1.2.4 oauth-credentials:0.4 jaxb:2.3.0.1 jira:3.2.1 ws-cleanup:0.39 credentials-binding:1.24 jquery-detached:1.2.1 display-url-api:2.3.4 jquery:1.12.4-1 blueocean-events:1.24.5 postbuildscript:2.11.0 jdk-tool:1.5 blueocean-i18n:1.24.5 blueocean-pipeline-scm-api:1.24.5 blueocean-display-url:2.4.1 multiple-scms:0.6 git-server:1.9 publish-over-ssh:1.22 blueocean-pipeline-api-impl:1.24.5 deploy:1.16 docker-java-api:3.1.5.2 pipeline-stage-tags-metadata:1.8.4 momentjs:1.1.1 blueocean:1.24.5 script-security:1.76 git-parameter:0.9.13 blueocean-dashboard:1.24.5 workflow-aggregator:2.6 google-oauth-plugin:1.0.4 command-launcher:1.5 blueocean- rest -impl:1.24.5 google-play-android-publisher:4.1 workflow-durable-task-step:2.38 workflow-scm-step:2.12 bouncycastle-api:2.20 jms-messaging:1.1.19 extended-choice-parameter:0.82 workflow-step-api:2.23 parameterized-trigger:2.40 blueocean-jwt:1.24.5 publish-over:0.22 handy-uri-templates-2-api:2.1.8-1.0 blueocean-github-pipeline:1.24.5 jenkins-design-language:1.24.5 gitlab-plugin:1.5.20 ansible:1.1 workflow-cps-global-lib:2.18 http_request:1.8.27 maven-plugin:3.10 ssh:2.6.1 workflow-support:3.8 pipeline-utility-steps:2.7.0 dashboard-view:2.15 ace-editor:1.1 postbuild-task:1.9 timestamper:1.12 pubsub-light:1.13 mattermost:3.1.1 jobConfigHistory:2.26 okhttp-api:3.14.9 allure-jenkins-plugin:2.29.0 pipeline-graph-analysis:1.10 blueocean-core-js:1.24.5 blueocean-jira:1.24.5 build-timeout:1.20 ssh-agent:1.22 snakeyaml-api:1.27.0 scm-api:2.6.4 blueocean-config:1.24.5 htmlpublisher:1.25 docker-workflow:1.26 workflow-job:2.40 blueocean-commons:1.24.5 pipeline-model-extensions:1.8.4 multibranch-scan-webhook-trigger:1.0.5 global-build-stats:1.5 statistics-gatherer:2.0.3 nodejs:1.4.0 jjwt-api:0.11.2-9.c8b45b8bb173 run-condition:1.5 git-client:3.7.0 extended-read-permission:3.2 email-ext:2.82 generic -webhook-trigger:1.72 conditional-buildstep:1.4.1 github-branch-source:2.10.2 workflow-api:2.42 throttle-concurrents:2.2 variant:1.4 github-api:1.123 matrix-auth:2.6.6 token-macro:2.15 junit:1.49 font-awesome-api:5.15.2-2 blueocean- rest :1.24.5 popper-api:1.16.1-2 subversion:2.14.0 jquery3-api:3.5.1-3 bootstrap4-api:4.6.0-2 echarts-api:5.0.1-1 ansicolor:0.7.5 apache-httpcomponents-client-4-api:4.5.13-1.0 github:1.33.1 git:4.7.0 jenkins-multijob-plugin:1.36 checks-api:1.6.1 blueocean-web:1.24.5 greenballs:1.15.1 trilead-api:1.0.13 ssh-slaves:1.31.6 cloudbees-bitbucket-branch-source:2.9.7 structs:1.22 plugin-util-api:2.1.0 jackson2-api:2.12.1