fixed a lot of things after i broke everything. Just the card is not implemented again yet

time

lib/methods/place_db_helper.dart

@@ -118,14 +118,24 @@ class PlaceDBHelper implements IDb{
   @override
   Future<List<Map<String, dynamic>>> getAllMainEntries() async {
     var placeDBClient = await dB;
-    return await placeDBClient.query('place');
+    var erg = await placeDBClient.query('place');
+    if (erg.isEmpty) {
+      return [];
+    } else {
+      return erg;
+    }
   }
 
   // get the finished templates from db
   @override
   Future<List<Map<String, dynamic>>> getAllTemplates() async {
     var placeDBClient = await dB;
-    return await placeDBClient.query('placeTemplates');
+    var erg = await placeDBClient.query('placeTemplates'); 
+    if (erg.isEmpty) {
+      return [];
+    } else {
+      return erg;
+    }
   }
 
   // deletes all finished entries from the db LOCALLY