diff --git a/deeplabcut/gui/tabs/create_videos.py b/deeplabcut/gui/tabs/create_videos.py
index 638c616d6..b3d49ccd8 100644
--- a/deeplabcut/gui/tabs/create_videos.py
+++ b/deeplabcut/gui/tabs/create_videos.py
@@ -276,7 +276,7 @@ def create_videos(self):
             self.root.writer.write("Labeled videos created.")
         else:
             failed_videos = [video for success, video in zip(videos_created, videos, strict=False) if not success]
-            failed_videos_str = ", ".join(failed_videos)
+            failed_videos_str = ", ".join(str(video) for video in failed_videos)
             self.root.writer.write(f"Failed to create videos from {failed_videos_str}.")
 
         if self.plot_trajectories.isChecked():
diff --git a/deeplabcut/utils/plotting.py b/deeplabcut/utils/plotting.py
index 3caaee9c4..d1d817594 100644
--- a/deeplabcut/utils/plotting.py
+++ b/deeplabcut/utils/plotting.py
@@ -318,7 +318,7 @@ def plot_trajectories(
 
     if len(failures) > 0:
         # Some videos were not evaluated.
-        failed_videos = ",".join(failures)
+        failed_videos = ",".join(str(video) for video in failures)
         if len(multianimal_errors) > 0:
             verbose_error = ": " + " ".join(multianimal_errors)
         else: