Finishing deunprap

src/data_provider/history.rs

@@ -15,7 +15,7 @@ pub fn get_history_of_set(id: Id) -> Result<Vec<HistoryItem>, NotificationData>
     let head = app_dir.clone().join(format!("set_{}_history.csv", id));
     let mut lines = Vec::new();
 
-    append_lines_if_exists(head, &mut lines);
+    append_lines_if_exists(head, &mut lines)?;
     lines.reverse();
     Ok(parse_history_items(lines))
 }