stage('Scan image'){
      steps {
        dir(env.DIRECTORY) {
          sh ' trivy fs --exit-code 0 --no-progress --format json --output results.json  tmp_dir'
          recordIssues(
            tools: [trivy(pattern: 'results.json', reportEncoding: 'UTF-8')]
          )
        }
      }
    }

cat results.json
{
  "SchemaVersion": 2,
  "ArtifactName": "/tmp/tmp.1F2RFo3ny4",
  "ArtifactType": "filesystem",
  "Metadata": {
    "ImageConfig": {
      "architecture": "",
      "created": "0001-01-01T00:00:00Z",
      "os": "",
      "rootfs": {
        "type": "",
        "diff_ids": null
      },
      "config": {}
    }
  }
}

[Pipeline] End of Pipeline
java.lang.NullPointerException
	at edu.hm.hafner.analysis.parser.TrivyParser.parseResults(TrivyParser.java:49)
	at edu.hm.hafner.analysis.parser.TrivyParser.parseJsonObject(TrivyParser.java:37)
	at edu.hm.hafner.analysis.parser.JsonIssueParser.parse(JsonIssueParser.java:33)
	at edu.hm.hafner.analysis.IssueParser.parseFile(IssueParser.java:48)
	at io.jenkins.plugins.analysis.core.model.FilesScanner.aggregateIssuesOfFile(FilesScanner.java:105)
	at io.jenkins.plugins.analysis.core.model.FilesScanner.scanFiles(FilesScanner.java:89)
	at io.jenkins.plugins.analysis.core.model.FilesScanner.invoke(FilesScanner.java:72)
	at io.jenkins.plugins.analysis.core.model.FilesScanner.invoke(FilesScanner.java:30)
	at hudson.FilePath.act(FilePath.java:1171)
	at hudson.FilePath.act(FilePath.java:1154)
	at io.jenkins.plugins.analysis.core.model.ReportScanningTool.scanInWorkspace(ReportScanningTool.java:164)
	at io.jenkins.plugins.analysis.core.model.ReportScanningTool.scan(ReportScanningTool.java:145)
	at io.jenkins.plugins.analysis.core.model.ReportScanningTool.scan(ReportScanningTool.java:129)
	at io.jenkins.plugins.analysis.core.steps.IssuesScanner.scan(IssuesScanner.java:95)
	at io.jenkins.plugins.analysis.core.steps.IssuesRecorder.scanWithTool(IssuesRecorder.java:765)
	at io.jenkins.plugins.analysis.core.steps.IssuesRecorder.record(IssuesRecorder.java:728)
	at io.jenkins.plugins.analysis.core.steps.IssuesRecorder.perform(IssuesRecorder.java:697)
	at io.jenkins.plugins.analysis.core.steps.RecordIssuesStep$Execution.run(RecordIssuesStep.java:1109)
	at io.jenkins.plugins.analysis.core.steps.RecordIssuesStep$Execution.run(RecordIssuesStep.java:1067)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
Finished: FAILURE