fix

src/views/tool.vue

@@ -304,18 +304,18 @@ export default {
         }
         document.documentElement.scrollTop = document.body.scrollTop = 0
         let me = this
+        setTimeout(function(){
           html2canvas(document.getElementById('posterOut'), {
             useCORS: true,
             backgroundColor:null,
             allowTaint: false
           }).then(canvas => {
             me.posterUrl = canvas.toDataURL('image/png')
-          setTimeout(function(){
               me.loadingShow = false
               me.showPoster = true
               me.createDialogShow = true
-          },300)
           })
+        },300)
       }else{
         this.applyDialogShow = true
       }