Wrap directory update in a try

stashr/utils.py

@@ -1107,7 +1107,12 @@ def new_add_scrape_match(item):
 
     database.session.merge(item)
     database.session.delete(item)
-    database.session.commit()
+    try:
+        database.session.commit()
+    except:
+        logger.warning(f'Volume {item.scrape_candidate} in database')
+        database.session.rollback()
+        return
 
     add_volume_to_library(item.scrape_candidate)
     scrape_volume_issues(item.scrape_candidate)