i am struggling to display the PDF in the browser, although i am getting Base64 code and using onlinetool(https://base64.guru/converter/decode/pdf) i can see the code convert into the correct PDF file that is stored in the backed.
After that i convert to blob Object and then it doesnt seems to open in the adobe reader when i click on the button.

// when the button is pressed, it will call the API to get the PDF document 



 const headers = new Headers();

        headers.append("content-type", "application/json");

        headers.append("responseType", "arraybuffer");



        const options = {

          method: "POST",

          headers,

          credentials: "include",

          body: JSON.stringify(invoice_Object),

          // body: "My HTML String",

        };



        const newRequest = new Request("http://localhost:5000/api/invoice-only", options);



        (async () => {

          const invoice_Call = await fetch(newRequest)

            .then((res) => {

              return text1 = res.text();

            })

            .then((data) => {

             generateFile(data, invoice_Name);// here data is the actual item that i am looking to display as PDF document

            });

        })();

      };

• Then it will open the PDF document in adobe reader, here the console content shows the correct Base64 code i think as seen when i use the code on online tool to convert to PDF document.
  So i am not sure if i am doing something wrong here generating the blob object and display as pdf.

   let generateFile = (content, fileName) => {

       console.log("content", content); // here at console if i copy the code and use online tool(https://base64.guru/converter/decode/pdf) it shows the correct pdf

       const blob = new Blob([content], { type: "application/pdf" });

       console.log(blob);

       const link = document.createElement("a");

       link.href = window.URL.createObjectURL(blob);

       link.download = fileName;

       link.click();

       };

• Backend code

     fs.readFile(`${__dirname}\` + `${Invoice_No_Actual}` + `.pdf`, (err, data) => {

          if (err) res.status(500).send(err);

          else {

                   res.contentType("application/pdf");

                 res.send(`data:application/pdf;base64,${new Buffer.from(data).toString("base64")}`);

          }

        });

      }

• BI have also uploaded the base64 code that i am getting when console logging at pastebin, https://pastebin.com/W4zEXyPy


• Error when opening the PDF document after i click the button