fix issue

Billing.Shared/Store/StoreHelper.cs

@@ -17,7 +17,7 @@ namespace Billing.Store
         public static string DatabasePath => Path.Combine(PersonalFolder, dbfile);
 
         #region Sqlite3
-        private const string dbfile = "data.db3";
+        private const string dbfile = ".master.db3";
         private static SQLiteAsyncConnection database;
         #endregion
 
@@ -42,6 +42,7 @@ namespace Billing.Store
             try
             {
                 File.Copy(file, path, true);
+                File.Delete(file);
             }
             catch (Exception ex)
             {
@@ -167,7 +168,15 @@ namespace Billing.Store
         public static async Task<int> GetLogsCount()
         {
             await Instance;
-            return await database.ExecuteScalarAsync<int>("SELECT COUNT(Id) FROM [Logs]");
+            try
+            {
+                return await database.ExecuteScalarAsync<int>("SELECT COUNT(Id) FROM [Logs]");
+            }
+            catch (SQLiteException)
+            {
+                await database.CreateTableAsync<Logs>();
+                return 0;
+            }
         }
         public static async Task<int> SaveLogItemAsync(Logs log)
         {