修改：删除全局loading

src/views/demonstration/detail/index.vue

@@ -291,7 +291,6 @@ export default {
 				this.$router.push({ path: `${UrlConfig.display}/demon`, query: query });
 				launchFullscreen();
 			}).catch(error => {
-				this.loading.close();
 				this.$messageBox(`创建仿真失败: ${error.message}`);
 			});
 		},

src/views/exam/detail/examDetail.vue

@@ -180,7 +180,6 @@ export default {
 				await this.$store.dispatch('exam/setTotalTime', this.userExam.duration);
 				await this.$store.dispatch('trainingList/setTrainingList', list);
 			} catch (error) {
-				this.loading.close();
 				// 判断是否有考试权限，如果没有权限则跳到购买页面，否则报错
 				if (error.code === 500004) {
 					this.$confirm('无此课程的考试权限，请前往购买！', '提示', {

src/views/lesson/trainingmanage/index.vue

@@ -258,12 +258,6 @@ export default {
 			this.$refs.draftTrain.show({ event: '03', title: '删除自动生成实训' });
 		},
 		demoDisplay(index, node) {
-			this.loading = this.$loading({
-				lock: true,
-				text: 'Loading',
-				spinner: 'el-icon-loading',
-				background: 'rgba(0, 0, 0, 0.7)'
-			});
 			trainingNotify({ trainingId: node.id }).then(resp => {
 				/** 区分演示和正式，需要在演示时设置lessonId为0*/
 				const query = { group: resp.data, trainingId: node.id, lessonId: 0 };
@@ -271,7 +265,6 @@ export default {
 				launchFullscreen();
 			}).catch(error => {
 				this.$messageBox(`创建仿真失败: ${error.message}`);
-				this.loading.close();
 			});
 
 		},