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Bug
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Resolution: Not A Defect
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Major
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None
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Jenkins-2.101
OS:windows 7
web browser:chrome
Downgraded Jenkins version 2.112 to 2.101 through Jenkins (localhost:8080).
After successful installed (Jenkins.war) and Jenkins restarted.
I am getting Error page.
- relates to
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JENKINS-48463 Jenkins should create xml 1.1 output in order to support control characters that are illegal in xml 1.0
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- Closed
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As designed, Jenkins 2.105 introduces XML 1.1, so you cannot just replace WAR files to downgrade the instance. Actually there is no reliable way to downgrade excepting doing a backup.
Please also see https://jenkins.io/doc/upgrade-guide/2.107/#xml-files-are-now-stored-as-xml-1-1 , which may give you some hints how to resolve the issue