# 大量TypeError:无法读取未定义属性'lookup'的属性

**URL:** <https://meta.discourse.org/t/a-lot-of-typeerror-cannot-read-property-lookup-of-undefined/170856>\
**Category:** Support\
**Created:** [2020年十一月21日 15:28 UTC](https://meta.discourse.org/t/a-lot-of-typeerror-cannot-read-property-lookup-of-undefined/170856 "2020-11-21T15:28:29Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![MarcP](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/marcp/32/160184_2.png) [@MarcP](https://meta.discourse.org/u/MarcP)\
**Post date:** [2020年十一月21日 15:28 UTC](https://meta.discourse.org/t/a-lot-of-typeerror-cannot-read-property-lookup-of-undefined/170856/1 "2020-11-21T15:28:29Z")

</div>

我的错误日志显示每小时报告 50 多个错误，不过我尚未在前端注意到任何异常。

这些大多是类似以下的警告：

```
TypeError: Cannot read property 'lookup' of undefined
    at n (https://domain.com/assets/application-4411e2550c07883f35936e49782de79d71ca918a5b09c8c2f53d8f00aaf0e566.js:1:371830)
    at t.invoke (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:487826)
    at e.t.flush (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:486840)
    at e.t.flush (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:488839)
    at e.t._end (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:494214)
    at e.t.end (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:490785)
    at e.t._run (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:494732)
    at e.t._join (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:494517)
    at e.t.join (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:491493)
    at c (https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:358691)

```

另一个频繁出现的警告是：

```
n@https://domain.com/assets/application-4411e2550c07883f35936e49782de79d71ca918a5b09c8c2f53d8f00aaf0e566.js:1:371825
d<t.invoke@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:487826
d<t.flush@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:486840
m<t.flush@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:488839
t<t._end@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:494214
t<t.end@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:490785
t<t._run@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:494732
t<t.run@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:491393
u@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:358611
s/r.success@https://domain.com/assets/application-4411e2550c07883f35936e49782de79d71ca918a5b09c8c2f53d8f00aaf0e566.js:1:204857
i@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:28213
fireWith@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:28981
w@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:79516
o/<@https://domain.com/assets/ember_jquery-189e46ebcb33594b835e782fd1ce916ec750bc0cf980ebc4fb7796649161a18d.js:1:81961

```

这些信息是否让各位感到熟悉？这是否值得担忧？

---

<div class="post-metadata">

**Author:** ![Mr.X\_Mr.X](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/mr.x_mr.x/32/126610_2.png) [@Mr.X\_Mr.X](https://meta.discourse.org/u/Mr.X_Mr.X)\
**Post date:** [2022年一月20日 13:11 UTC](https://meta.discourse.org/t/a-lot-of-typeerror-cannot-read-property-lookup-of-undefined/170856/2 "2022-01-20T13:11:59Z")

</div>

我遇到了同样的错误，不知道是什么原因。这值得担心吗？

```plaintext
TypeError: undefined is not an object (evaluating 'this.lookup')
Uncaught TypeError: Cannot read properties of undefined (reading 'lookup')

```

```plaintext
TypeError: Cannot read properties of undefined (reading 'lookup')
    at n (https://www.domainname/assets/application-e0f95680d521105700427121a33fd1b3cbea44e92926f960e3f3b9dba7fdfdc9.js:1:422985)
    at t.invoke (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:405488)
    at e.t.flush (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:404475)
    at e.t.flush (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:406516)
    at e.n._end (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:411971)
    at e.n.end (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:408652)
    at e.n._run (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:412509)
    at e.n._join (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:412294)
    at e.n.join (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:409360)
    at h (https://www.domainname/assets/vendor-96a5eaa8d436066b954c21ae5afb7f504310945c679465a2f1ba46b429a95edf.js:30:273786)

```