fix: 默认值数组类型为空时错误

src/components/parser/Parser.vue

@@ -280,8 +280,10 @@ export default {
                     if (tagOptionKey && defaultValue) {
                         if (defaultValue instanceof Array) {
                             defaultValue.forEach(item => {
+                                if(item){
                                     let {label} = getObject(_.get(cur, tagOptionKey), 'value', item)
                                     labelStr += label + ','
+                                }
                             })
                             formData[cur.__vModel__] = labelStr
                         } else {