vue 项目下载excel 文件报错The file at 'blob:http://xxxx' was loaded over an insecure connection？

Question

The file at 'blob:http://xxxx' was loaded over an insecure connection. This file should be served over HTTPS. 这种要怎么改？

          <div @click="download">下载</div>
           download() {
              const x: any = new window.XMLHttpRequest();
              x.open(
                "GET",
                "https:xxxx.xlsx",
                true
              );
              x.responseType = "blob";
              x.onload = () => {
                const url = window.URL.createObjectURL(x.response);
                const link = document.createElement("a");
                link.href = url;
                link.download = "格式文件.xlsx";
                link.click();
              };
              x.send();
            }