fix: buffer api

src/modules/basic/view/school.vue

@@ -537,7 +537,7 @@ export default {
     },
     qrcodeContent(row) {
       let str = row.id + "@" + row.name;
-      let base64Str = new Buffer(str).toString("base64");
+      let base64Str = Buffer.from(str).toString("base64");
       // console.log(base64Str);
       return base64Str;
     },