fix(接口测试): 修复接口导入报错问题

--user=郭雨琦

backend/src/main/java/io/metersphere/api/service/ApiModuleService.java

@@ -1365,6 +1365,7 @@ public class ApiModuleService extends NodeTreeService<ApiModuleDTO> {
             int finalI = i;
             //在选择的模块下建模块，查看选择的模块下有没有同名的模块
             List<ApiModule> moduleList = pidChildrenMap.get(parentModule.getId());
+            if (moduleList != null && !moduleList.isEmpty()) {
                 List<ApiModule> collect1 = moduleList.stream().filter(t -> t.getName().equals(tagTree[finalI])).collect(Collectors.toList());
                 if (collect1.isEmpty()) {
                     return createModule(tagTree, i, parentModule, moduleMap, pidChildrenMap, idPathMap);
@@ -1373,6 +1374,7 @@ public class ApiModuleService extends NodeTreeService<ApiModuleDTO> {
                     parentModule = collect1.get(0);
                 }
             }
+        }
         return returnModule;
     }