Strategy-does-not-implement-inherited-abstract-member-UserStrategyBase-Execute

My first meager attempt and adding some functionality to an existing code. However I ran into an ERROR that I cannot solve

CODE:
// One Percent Per Week v3  Original version Glitch (Dion)
// Mods By Guy Fleury. v5. May 2024
// Optimizable Risk Control added by Carova April 2025
using WealthLab.Backtest;
using System;
using WealthLab.Core;
using WealthLab.Indicators;
using System.Collections.Generic;

namespace WealthScript1
{
   public class OnePercentOptimized : UserStrategyBase
   {
      public OnePercentOptimized() : base()
      {
         AddParameter("Profit Target Multiplier", ParameterType.Double, 1.01, 1.01, 1.10, 0.001);
         AddParameter("Stop Loss Multiplier", ParameterType.Double, 2, 1, 3, 0.1);
         AddParameter("Entry Limit Factor", ParameterType.Double, 1.0, 0.98, 1.02, 0.001);
      }

      public override void Initialize(BarHistory bars)
      {
         atr = new ATR(bars, 14); 
         PlotIndicator(atr, WLColor.Red);
         ProfitTarget = Parameters[0].AsDouble;
         StopLoss = Parameters[1].AsDouble;
         EntryLimit = Parameters[2].AsDouble;
      }

      public override void ExecuteSessionOpen(BarHistory bars, int idx, double sessionOpenPrice)
      {
         bool NextBarIsStartOfWeek = _lastBarofWeek == idx;
         bool NextBarIsLastDayOfWeek = bars.TomorrowIsLastTradingDayOfWeek(idx);

         if (NextBarIsLastDayOfWeek)
            _lastBarofWeek = idx + 1;

         if (idx - 1 == _lastBarofWeek)
            SetBackgroundColor(bars, idx, WLColor.Silver.SetAlpha(32));

         if (NextBarIsStartOfWeek)
         {
            mondayOpen = sessionOpenPrice;
            tradedThisWeek = false;
         }

         // Risk Mitigation & Optimized Trade Execution
         if (HasOpenPosition(bars, PositionType.Long))
         {
            double target = LastOpenPosition.EntryPrice * ProfitTarget;
            double atrStop = LastOpenPosition.EntryPrice - (StopLoss * atr[idx]);

            // Adjust profit targets based on performance
            if (LastOpenPosition.ProfitPctAsOf(idx) > 0.3)
               target *= 1.011;

            // Apply optimized stop-loss
            CloseAtTrailingStop(LastPosition, TrailingStopType.PercentHL, atrStop, "Sell at " + atrStop + "% trailing stop loss");

            // Place sell limit order at optimized target
            PlaceTrade(bars, TransactionType.Sell, OrderType.Limit, target);

            // End-of-week mandatory exit
            if (NextBarIsLastDayOfWeek)
               PlaceTrade(bars, TransactionType.Sell, OrderType.MarketClose);
         }
         else
         {
            // Volatility-filtered entry with optimized entry factor
            if (!Double.IsNaN(mondayOpen) && !tradedThisWeek)
            {
               PlaceTrade(bars, TransactionType.Buy, OrderType.Limit, mondayOpen * EntryLimit);

               if (NextBarIsLastDayOfWeek)
                  PlaceTrade(bars, TransactionType.Sell, OrderType.MarketClose);
            }
         }
      }

      //declare private variables below
      private double mondayOpen = Double.NaN;
      bool tradedThisWeek = false;
      int _lastBarofWeek = -1;
      double ProfitTarget;
      double StopLoss;
      double EntryLimit;
      IndicatorBase atr;
   }
}

QUOTE:
12: 'OnePercentOptimized' does not implement inherited abstract member 'UserStrategyBase.Execute(BarHistory, int)'

What am I doing wrong? Thanks!