diff --git a/src/Obj/Base/BillboardObject/index.js b/src/Obj/Base/BillboardObject/index.js
index 968d751..dafb8c8 100644
--- a/src/Obj/Base/BillboardObject/index.js
+++ b/src/Obj/Base/BillboardObject/index.js
@@ -273,7 +273,7 @@ class BillboardObject extends Base {
     else {
       let image = new Image()
       image.src =
-      url ||
+        url ||
         that.getSourceRootPath() + '/img/A-ablu-blank.png'
       switch (that.options.heightMode) {
         case 2:
@@ -766,6 +766,8 @@ class BillboardObject extends Base {
       _this._frameImages = []
       superGif.load(function (status) {
         if (status == 404) {
+          let width = 31
+          let height = 36
           canvas = document.createElement('canvas')
           canvas.width = 0
           canvas.height = 0
@@ -855,6 +857,8 @@ class BillboardObject extends Base {
         billboardH = height * (31 / width)
       }
       image.onerror = function (err) {
+        let width = 31
+        let height = 36
         canvas.width = 0
         canvas.height = 0
         billboardH = 0
@@ -2344,7 +2348,7 @@ class BillboardObject extends Base {
   }
 
   async updateHeight() {
-    if(!this.sdk || !this.sdk.viewer || !this.sdk.viewer.scene) {
+    if (!this.sdk || !this.sdk.viewer || !this.sdk.viewer.scene) {
       return
     }
     let height