kiruthisubbu if you upgraded the plugins, then you did not update the list of installed versions that you provided in Jenkins_Plugin.txt because there are several plugins in that list that are not the current release. For example:
- You list scm-api 2.6.5, but 595.vd5a_df5eb_0e39 is the current version, released 20 days ago
- You list schedule-build 0.5.1 but the 178.v32999348869c is the current version, released 3 months ago
- You list git plugin 4.8.2 but 4.10.3 is the current version, released a week ago
- You list subversion plugin 2.14.4 but 2.15.2 is the current version, released 2 weeks ago
If you followed all the steps in https://community.jenkins.io/t/migrating-jenkins/894/5, then you missed that the job direct mail plugin is in the list of plugins known to have issues with configuration form modernization. JENKINS-65478 and JENKINS-65887 both document that in the list of plugins with known issues., You'll need to remove that plugin or adopt the plugin and fix it.
You're running an unreleased version of the project stats plugin. The last release was 9 years ago. That plugin may have issues with configuration form modernization.
Please update the list of plugins installed and provide the list in the format described in the links available from https://community.jenkins.io/t/migrating-jenkins/894/5 so that others will be more willing to help you.
You're using private builds of at least two plugins, tnpublisher and project-stats-plugin. Others do not have access to your private builds of those plugins. You'll need to remove them.
Your list includes several plugins that are not available from the Jenkins update center, including jenkins-dive, tnpublisher, sdlmahud. You'll need to remove them.
Please refer to https://community.jenkins.io/t/migrating-jenkins/894/5 for detailed steps you should take to evaluate your own installation. Once those detailed steps are complete, please update the issue with the additional information from your exploration.