Boa noite uma duvida como eu faço esse mix, por exemplo tenho dois end point: const file1Response = await api.get(/upload/files/122, {
headers: {
Authorization: Bearer ${token},
},
responseType: "text",
});
const pdfId = localStorage.getItem('mediaPdf_id')
const file2Response = await api.get(/upload/files/127, {
headers: {
Authorization: Bearer ${token},
},
responseType: "text",
});

  const pdfData1 = file1Response.data;
  const pdfData2 = file2Response.data;

  const mergedPdfData = pdfData1 + pdfData2;

  const mergedPdfBlob = new Blob([mergedPdfData], { type: "application/pdf" });
  const mergedPdfFile = new File([mergedPdfBlob], data1 + "merged.pdf", {
    type: "application/pdf",
  });

  const formData = new FormData();
  formData.append("files", mergedPdfFile);

  const response = await api.post('/upload', formData, {
    headers: {
      Authorization: `Bearer ${token}`,
    },
  });

  const mergedPdfFileId = response.data.id;

  const mergedPdfUrl = URL.createObjectURL(mergedPdfBlob);
  window.open(mergedPdfUrl, "_blank"); estou fazendo assim, pegando dois pdf e qerendo fazer um novo, mas nao estou conseguindo