java.lang.NoSuchMethodError: No such DSL method 'scmGit' found among steps [acceptGitLabMR, addGitLabMRComment, archive, bat, build, catchError, checkout, deleteDir, dir, echo, emailext, emailextrecipients, envVarsForTool, error, fileExists, findBuildScans, getContext, git, gitPush, gitlabBuilds, gitlabCommitStatus, input, isUnix, junit, library, libraryResource, load, mail, milestone, node, parallel, powershell, properties, publishChecks, publishHTML, pwd, pwsh, readFile, readTrusted, resolveScm, retry, script, sh, sleep, sshagent, stage, stash, step, timeout, timestamps, tm, tool, unarchive, unstable, unstash, updateGitlabCommitStatus, validateDeclarativePipeline, waitUntil, warnError, withChecks, withContext, withCredentials, withEnv, withGradle, wrap, writeFile, ws] or symbols [GitUsernamePassword, all, allBranchesSame, allOf, always, ant, antFromApache, antOutcome, antTarget, any, anyOf, apiToken, architecture, archiveArtifacts, artifactManager, authorizationMatrix, batchFile, bitbucketServer, booleanParam, branch, brokenBuildSuspects, brokenTestsSuspects, buildButton, buildDiscarder, buildDiscarders, buildRetention, buildUser, buildingTag, builtInNode, caseInsensitive, caseSensitive, certificate, changeRequest, changelog, changeset, checkoutToSubdirectory, choice, choiceParam, cleanWs, clock, command, configFile, configFileProvider, contributor, credentials, cron, crumb, culprits, default, defaultFolderConfiguration, defaultView, demand, developers, disableConcurrentBuilds, disableResume, downstream, dumb, durabilityHint, email-ext, envVars, envVarsFilter, environment, equals, executor, expression, extendedEmailPublisher, file, fileParam, filePath, fingerprint, fingerprints, frameOptions, freeStyle, freeStyleJob, fromScm, fromSource, git, gitBranchDiscovery, gitHubBranchDiscovery, gitHubBranchHeadAuthority,

这个错误提示是 Jenkins 找不到名为 `scmGit` 的 pipeline step。有可能是您的 pipeline 脚本中使用了这个不存在的 step，或者是您使用的插件版本不支持这个 step。建议您检查一下您的 pipeline 脚本和插件版本，确保使用的 step 是存在且支持的。如果需要进一步的帮助，请提供详细的错误信息和 pipeline 脚本。