Automagic: Fixes #1417

volatility3/framework/automagic/symbol_cache.py

@@ -299,6 +299,13 @@ class SqliteCache(CacheManagerInterface):
         This also updates remote locations based on a cache timeout.
 
         """
+        if progress_callback is None:
+
+            def dummy_progress(*args, **kargs) -> None:
+                return None
+
+            progress_callback = dummy_progress
+
         on_disk_locations = set(
             [
                 filename