First database deunwrap

src/app.rs

@@ -95,7 +95,7 @@ pub fn fill_state(state: &mut AppState) {
     let setting = load_settings(&state.connection);
 
     state.dictionary = list;
-    state.decks = sets;
+    state.decks = sets.unwrap_or_default();
     state.word_groups = groups;
     state.sync_data = setting
 }