I have 2 sheet on my spreadsheet. My code works with first sheet but when i try with second sheet it returns null. I can’t understand why. Also i checked realtime requests it looks returns my data but my sidebar value null still.

function getAllRowsData() {
  try {
    var ss = SpreadsheetApp.getActive();
    var sheet = ss.getActiveSheet();
    
    // Get the spreadsheet name
    var spreadsheetName = sheet.getName();
    
    // Get the values of all rows
    var allRows = sheet.getDataRange().getValues();
        
    // Get the column names from the first row
    var columnNames = allRows[0];
    
    // Get the data rows (excluding the header row)
    var dataRows = allRows.slice(1);
    
    var result = { spreadsheetName: spreadsheetName, columns: columnNames, rows: dataRows };
    Logger.log(result);
    return result;
  } catch (error) {
    Logger.log("An error occurred: " + error.message);
    return null;
  }
}

function getActiveCellValue() {
            google.script.run.withSuccessHandler(setData).withFailureHandler(function(e){console.error(e)}).withLogger(function(e){console.warn("The following log was generated:"+e)}).getAllRowsData();
        }

I wanted to get my data but it returns null