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java.lang.NullPointerException at com.cloudbees.plugins.credentials.matchers.IdMatcher.<init>(IdMatcher.java:56) at com.cloudbees.plugins.credentials.CredentialsMatchers.withId(CredentialsMatchers.java:132) at jenkins.plugins.git.AbstractGitSCMSource.getCredentials(AbstractGitSCMSource.java:423) at jenkins.plugins.git.AbstractGitSCMSource.doRetrieve(AbstractGitSCMSource.java:180) at jenkins.plugins.git.AbstractGitSCMSource.retrieve(AbstractGitSCMSource.java:357) at jenkins.scm.api.SCMSource.fetch(SCMSource.java:278) at org.jenkinsci.plugins.workflow.libs.LibraryConfiguration$DescriptorImpl.doCheckDefaultVersion(LibraryConfiguration.java:195)