Did you try using the syntax generator on your jenkins install sidebar? It usually depends on what version you have installed and the generator will only list what is available for your installed version
java.lang.IllegalArgumentException: The frontend sent an unexpected list of classes ([“io.jenkins.plugins.analysis.warnings.AcuCobol”,“io.jenkins.plugins.analysis.warnings.Gnat”,“io.jenkins.plugins.analysis.warnings.AndroidLint”,“io.jenkins.plugins.analysis.warnings.AnsibleLint”,snip,“io.jenkins.plugins.analysis.warnings.OELintAdv”]) rather than an expected single class. See Table to div layout migration for more information.
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:723)
Caused: java.lang.IllegalArgumentException: Failed to convert the tool parameter of the constructor public io.jenkins.plugins.analysis.core.steps.ToolProxy(io.jenkins.plugins.analysis.core.model.Tool)
at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:852)
at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:741)
Caused: java.lang.IllegalArgumentException: Failed to instantiate class io.jenkins.plugins.analysis.core.steps.ToolProxy from {“”:“0”,“tool”:{“stapler-class”:
Does that give a clue? This used to work, but I know our IT proxy servers have changed. Could ‘Tool Proxy’ be associated with a network proxy?