解决冲突第三次

src/components/Verifition/Verify.vue

@@ -43,7 +43,6 @@
  * */
 import VerifySlide from './Verify/VerifySlide'
 import VerifyPoints from './Verify/VerifyPoints'
-import { NULL } from 'node-sass'
 
 export default {
   name: 'Vue2Verify',
@@ -70,15 +69,15 @@ export default {
     captchaType: {
       type: String,
       required: true,
-      default: NULL
+      default: null
     },
     figure: {
       type: Number,
-      default: NULL
+      default: null
     },
     arith: {
       type: Number,
-      default: NULL
+      default: null
     },
     mode: {
       type: String,
@@ -86,11 +85,11 @@ export default {
     },
     vSpace: {
       type: Number,
-      default: NULL
+      default: null
     },
     explain: {
       type: String,
-      default: NULL
+      default: null
     },
     imgSize: {
       type: Object,
@@ -103,11 +102,11 @@ export default {
     },
     blockSize: {
       type: Object,
-      default: NULL
+      default: null
     },
     barSize: {
       type: Object,
-      default: NULL
+      default: null
     }
   },
   data() {