Avoid DocumentNotFoundException in listener 'checkedInCommentListener'

org.nuxeo.ecm.core.api.NuxeoException: Work failed after 2 retries, class=class org.nuxeo.ecm.core.event.impl.AsyncEventExecutor$ListenerWork id=11084563590708.1167959855 category=checkedInCommentListener title=Listener checkedInCommentListener [documentCheckedIn/63290d9f-f114-44ae-902d-0b470d0485ac]
  at org.nuxeo.ecm.core.work.AbstractWork.workFailed(AbstractWork.java:470)
  at org.nuxeo.ecm.core.work.AbstractWork.run(AbstractWork.java:400)
  at org.nuxeo.ecm.core.work.WorkHolder.run(WorkHolder.java:57)
  at org.nuxeo.ecm.core.work.WorkComputation.processRecord(WorkComputation.java:105)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.lambda$processRecordWithRetry$10(ComputationRunner.java:514)
  at net.jodah.failsafe.Functions$10.call(Functions.java:252)
  at net.jodah.failsafe.SyncFailsafe.call(SyncFailsafe.java:145)
  at net.jodah.failsafe.SyncFailsafe.run(SyncFailsafe.java:81)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.processRecordWithRetry(ComputationRunner.java:514)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.processRecordWithTracing(ComputationRunner.java:465)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.processRecord(ComputationRunner.java:457)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.processLoop(ComputationRunner.java:315)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.runOnce(ComputationRunner.java:259)
  at org.nuxeo.lib.stream.computation.log.ComputationRunner.run(ComputationRunner.java:226)
  at java.base/java.util.concurrent.Executors$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$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:829)
 Caused by: org.nuxeo.ecm.core.api.DocumentNotFoundException: 1525adec-6991-4a0e-803d-c49798501fff
  at org.nuxeo.ecm.core.storage.dbs.DBSSession.getDocumentByUUID(DBSSession.java:407)
  at org.nuxeo.ecm.core.api.AbstractSession.resolveReference(AbstractSession.java:385)
  at org.nuxeo.ecm.core.api.AbstractSession.hasChild(AbstractSession.java:945)
  at org.nuxeo.ecm.platform.comment.listener.CheckedInCommentListener.handleEvent(CheckedInCommentListener.java:65)
  at org.nuxeo.ecm.platform.comment.listener.CheckedInCommentListener.handleEvent(CheckedInCommentListener.java:56)
  at org.nuxeo.ecm.core.event.impl.AsyncEventExecutor$ListenerWork.work(AsyncEventExecutor.java:209)
  at org.nuxeo.ecm.core.work.AbstractWork.runWorkWithTransaction(AbstractWork.java:524)
  at org.nuxeo.ecm.core.work.AbstractWork.run(AbstractWork.java:387)
 ... 17 more
 Suppressed: org.nuxeo.ecm.core.api.DocumentNotFoundException: 1525adec-6991-4a0e-803d-c49798501fff
  ... 25 more
 Suppressed: org.nuxeo.ecm.core.api.DocumentNotFoundException: 1525adec-6991-4a0e-803d-c49798501fff
  ... 25 more
 ", "className": "impl.AsyncEventExecutor", "message": "Failed to execute async event default on listener checkedInCommentListener

diff --git a/modules/platform/nuxeo-platform-comment/nuxeo-platform-comment/src/main/java/org/nuxeo/ecm/platform/comment/listener/CheckedInCommentListener.java b/modules/platform/nuxeo-platform-comment/nuxeo-platform-comment/src/main/java/org/nuxeo/ecm/platform/comment/listener/CheckedInCommentListener.java
index 08c050772d0..01a5dc4070a 100644
--- a/modules/platform/nuxeo-platform-comment/nuxeo-platform-comment/src/main/java/org/nuxeo/ecm/platform/comment/listener/CheckedInCommentListener.java
+++ b/modules/platform/nuxeo-platform-comment/nuxeo-platform-comment/src/main/java/org/nuxeo/ecm/platform/comment/listener/CheckedInCommentListener.java
@@ -27,6 +27,8 @@ import static org.nuxeo.ecm.platform.comment.impl.AbstractCommentManager.COMMENT
 import java.util.ArrayList;
 import java.util.Arrays;
 
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.nuxeo.ecm.core.api.CoreSession;
 import org.nuxeo.ecm.core.api.DocumentModel;
 import org.nuxeo.ecm.core.api.DocumentModelList;
@@ -44,6 +46,8 @@ import org.nuxeo.ecm.core.event.PostCommitFilteringEventListener;
  */
 public class CheckedInCommentListener implements PostCommitFilteringEventListener {
 
+    private static final Logger log = LogManager.getLogger(CheckedInCommentListener.class);
+
     @Override
     public boolean acceptEvent(Event event) {
         return DOCUMENT_CHECKEDIN.equals(event.getName());
@@ -62,9 +66,13 @@ public class CheckedInCommentListener implements PostCommitFilteringEventListene
         EventContext ctx = event.getContext();
         CoreSession session = ctx.getCoreSession();
         DocumentRef versionRef = (DocumentRef) ctx.getProperty("checkedInVersionRef");
-        if (versionRef != null && session.hasChild(versionRef, COMMENTS_DIRECTORY)) {
-            DocumentModel comments = session.getChild(versionRef, COMMENTS_DIRECTORY);
-            updateCommentProperties(session, comments.getId(), versionRef.reference().toString());
+        if (session.exists(versionRef)) {
+            if (versionRef != null && session.hasChild(versionRef, COMMENTS_DIRECTORY)) {
+                DocumentModel comments = session.getChild(versionRef, COMMENTS_DIRECTORY);
+                updateCommentProperties(session, comments.getId(), versionRef.reference().toString());
+            }
+        } else {
+            log.warn("Document {} does not exist, SKIPPED.", versionRef);
         }
     }