diff --git a/server/lib/activitypub/send/send-undo.ts b/server/lib/activitypub/send/send-undo.ts
index 352c158fd6b..d2b738befc1 100644
--- a/server/lib/activitypub/send/send-undo.ts
+++ b/server/lib/activitypub/send/send-undo.ts
@@ -79,8 +79,13 @@ async function sendUndoDislike (byActor: MActor, video: MVideoAccountLight, t: T
 async function sendUndoCacheFile (byActor: MActor, redundancyModel: MVideoRedundancyVideo, t: Transaction) {
   logger.info('Creating job to undo cache file %s.', redundancyModel.url)
 
-  const videoId = redundancyModel.getVideo().id
-  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
+  const associatedVideo = redundancyModel.getVideo()
+  if (!associatedVideo) {
+    logger.warn('Cannot send undo activity for redundancy %s: no video files associated.', redundancyModel.url)
+    return
+  }
+
+  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(associatedVideo.id)
   const createActivity = buildCreateActivity(redundancyModel.url, byActor, redundancyModel.toActivityPubObject())
 
   return sendUndoVideoRelatedActivity({ byActor, video, url: redundancyModel.url, activity: createActivity, transaction: t })
diff --git a/server/lib/activitypub/send/send-update.ts b/server/lib/activitypub/send/send-update.ts
index 305edf429d7..bcf6e156968 100644
--- a/server/lib/activitypub/send/send-update.ts
+++ b/server/lib/activitypub/send/send-update.ts
@@ -75,7 +75,13 @@ async function sendUpdateActor (accountOrChannel: MChannelDefault | MAccountDefa
 async function sendUpdateCacheFile (byActor: MActorLight, redundancyModel: MVideoRedundancyVideo) {
   logger.info('Creating job to update cache file %s.', redundancyModel.url)
 
-  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(redundancyModel.getVideo().id)
+  const associatedVideo = redundancyModel.getVideo()
+  if (!associatedVideo) {
+    logger.warn('Cannot send update activity for redundancy %s: no video files associated.', redundancyModel.url)
+    return
+  }
+
+  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(associatedVideo.id)
 
   const activityBuilder = (audience: ActivityAudience) => {
     const redundancyObject = redundancyModel.toActivityPubObject()
diff --git a/server/models/redundancy/video-redundancy.ts b/server/models/redundancy/video-redundancy.ts
index fa96a1e39c0..c536c288ba4 100644
--- a/server/models/redundancy/video-redundancy.ts
+++ b/server/models/redundancy/video-redundancy.ts
@@ -651,7 +651,9 @@ export class VideoRedundancyModel extends Model {
   getVideo () {
     if (this.VideoFile) return this.VideoFile.Video
 
-    return this.VideoStreamingPlaylist.Video
+    if (this.VideoStreamingPlaylist.Video) return this.VideoStreamingPlaylist.Video
+
+    return undefined
   }
 
   isOwned () {