sheet.rows not working in production on web

[pom11]

In development i can bold certain cells, in production i cannot.

Expected result (in development)

Result (in production)

Console logs

Code

rows.forEach((row) => sheet1.appendRow(row));
print("this is a test");
print(sheet1.rows.first[sheet1.rows.first.length - 2].toString());
print("finished test");
sheet1.rows
    .where((e) => e[e.length - 2].toString().contains("Total KG"))
    .forEach((row) => row.forEach(
        (cell) => cell?.cellStyle = xlsx.CellStyle(bold: true)));