diff --git a/superset/tasks/thumbnails.py b/superset/tasks/thumbnails.py
index d76939a07e3a0..03b3999dce876 100644
--- a/superset/tasks/thumbnails.py
+++ b/superset/tasks/thumbnails.py
@@ -48,6 +48,9 @@ def cache_chart_thumbnail(
         logger.warning("No cache set, refusing to compute")
         return None
     chart = cast(Slice, Slice.get(chart_id))
+    if not chart:
+        logger.warning("No chart found, skip computing chart thumbnail")
+        return None
     url = get_url_path("Superset.slice", slice_id=chart.id)
     logger.info("Caching chart: %s", url)
     _, username = get_executor(