im making a whatsapp bot, im saving the chats in a excel file (im using exceljs) to read and handle some responses, i prefer to use promises and resolve them, i have a function to read chats:

const readChat = (number, message, step = null) =>
  new Promise((resolve, reject) => {
    setTimeout(() => {
      number = number.replace("@c.us", "");
      number = `${number}@c.us`;
      const pathExcel = `./chats/${number}.xlsx`;
      const workbook = new ExcelJS.Workbook();
      const today = moment().format("DD-MM-YYYY hh:mm");

      if (fs.existsSync(pathExcel)) {
        const workbook = new ExcelJS.Workbook();
        workbook.xlsx
          .readFile(pathExcel)
          .then(() => {
            const worksheet = workbook.getWorksheet(1);
            const lastRow = worksheet.lastRow;
            let getRowInsert = worksheet.getRow(++lastRow.number);
            getRowInsert.getCell("A").value = today;
            getRowInsert.getCell("B").value = message;

            if (step) {
              getRowInsert.getCell("C").value = step;
            }

            getRowInsert.commit();
            workbook.xlsx
              .writeFile(pathExcel)
              .then(() => {
                const getRowPrevStep = worksheet.getRow(lastRow.number);
                const lastStep = getRowPrevStep.getCell("C").value;
                resolve(lastStep);
              })
              .catch((err) => {
                console.log("ERR", err);
                reject("error");
              });
          })
          .catch((err) => {
            console.log("ERR", err);
            reject("error");
          });
      } else {
        const worksheet = workbook.addWorksheet("Chats");
        worksheet.columns = [
          { header: "Fecha", key: "number_customer" },
          { header: "Mensajes", key: "message" },
          { header: "Paso", key: "step" },
        ];

        step = step || "";

        worksheet.addRow([today, message, step]);
        workbook.xlsx
          .writeFile(pathExcel)
          .then(() => {
            resolve("STEP_1");
          })
          .catch((err) => {
            console.log("Error", err);
            reject("error");
          });
      }
    }, 1000);
  });

but the code after that else, its giving me the error: ERR Error: End of data reached (data length = 0, asked index = 4). Corrupted zip ?, the else, is supposed to be executed when there is no excel saved with that chat. I searched in many questions and pages, but i have not found any solution