Not able to export .ai files. Illustrator just became inactive after click on upload

I am deveoping a plugin in which I need toupload selected document to my plugin. I am able to upload all type of file except .ai file. When I try to upload .ai file Illustrator became Inactive and I have to quit and reopen it to use. Can anyone suggest what should I do to upload .ai file. Please refer my code for reference:- 

function uploadAssets() {
var doc = app.activeDocument;
var placedItem = doc.selection[0];

if(placedItem === undefined){
   return JSON.stringify({imageData : null , imagePath : "no item selected"})
} else {
   var imageFile = new File(doc.fullName);
  // selected path name
  var selectedPath = imageFile.fsName
  // Converting file to binary data
  imageFile.open("r");
  imageFile.encoding = "Binary";
  var binaryData = imageFile.read();
  imageFile.close();
  return JSON.stringify({imageData : binaryData, imagePath : selectedPath})
 }
}

 and I am calling this function using evalScript

csInterface.evalScript(`uploadAssets()`, async (res) => {
      const resData = JSON.parse(res)

      if(resData.imageData !== null) {
        // Image binary data
        const binData = resData.imageData
  
        //Image file path
        const imgPath = resData.imagePath
      
        const splitModifiedPath = imgPath.split('/');
  
        // Name of the file
        const fileName = splitModifiedPath[splitModifiedPath.length - 1];
        const fileArray = fileName.split(".")
  
        // file extension
        const extension = fileArray[fileArray.length - 1]
  
  
        const buffer = new ArrayBuffer(binData.length);
        const view = new Uint8Array(buffer);
  
        for (let n = 0; n < binData.length; n++) {
          view[n] = binData.charCodeAt(n);
        }
        const type = `${extension}`;
        const blob = new Blob([buffer], { type });
        const fileUrl = new File([blob], fileName , {
          lastModified: new Date().getTime(),
          type,
        });
        setSelectedFrameName(fileUrl.name)
        handleSelectedFrame(fileUrl)
        
      } else {
        setSelectedFrameName(resData.imagePath)
        setNotSelected(true)
      }
    })

  };
  const handleTaskRadioFile = (e) => {
    setCheckFile(e.target.checked);
    setCheckFrame(false);
  };

Please help me in this. I will be greatful for your help
Thanks