bugfix

src/views/photoManagement/eventsList/modal/ItemModal.vue

@@ -170,9 +170,9 @@ export default {
       this.$refs.form.validate(async valid => {
         if (valid) {
           let params = Object.assign({}, this.form);
-          params.cover = this.form.cover[0].url;
-          params.previewLogo = this.form.previewLogo[0].url;
-          params.hdLogo = this.form.hdLogo[0].url;
+          params.cover = this.form.cover[0] && this.form.cover[0].url;
+          params.previewLogo = this.form.previewLogo[0] && this.form.previewLogo[0].url;
+          params.hdLogo = this.form.hdLogo[0] && this.form.hdLogo[0].url;
           params.eventStartDate = this.form.eventTimeArr[0];
           params.eventEndDate = this.form.eventTimeArr[1];