# Perspective - listener not found

**URL:** <https://forum.inductiveautomation.com/t/perspective-listener-not-found/67027>\
**Category:** Ignition Early Access\
**Tags:** perspective, ignition81\
**Created:** [November 29, 2022, 2:14pm UTC](https://forum.inductiveautomation.com/t/perspective-listener-not-found/67027 "2022-11-29T14:14:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![luc.martin](https://avatars.discourse-cdn.com/v4/letter/l/77aa72/32.png) [@luc.martin](https://forum.inductiveautomation.com/u/luc.martin)\
**Post date:** [November 29, 2022, 2:14pm UTC](https://forum.inductiveautomation.com/t/perspective-listener-not-found/67027/1 "2022-11-29T14:14:47Z")

</div>

Since I upgrade to 8.1.22 i got that error (in Chrome)

```auto
PerspectiveMap.cb1f10beb53f38f3c29b.js:2 listener not found
_off @ PerspectiveMap.cb1f10beb53f38f3c29b.js:2
off @ PerspectiveMap.cb1f10beb53f38f3c29b.js:2
detachEvents @ PerspectiveMap.cb1f10beb53f38f3c29b.js:2
componentWillUnmount @ PerspectiveMap.cb1f10beb53f38f3c29b.js:2
mj @ react-dom-16.14.0.js:125
Ch @ react-dom-16.14.0.js:129
Dh @ react-dom-16.14.0.js:133
Aj @ react-dom-16.14.0.js:158
unstable_runWithPriority @ react-16.14.0.js:25
Da @ react-dom-16.14.0.js:60
ab @ react-dom-16.14.0.js:154
Te @ react-dom-16.14.0.js:146
(anonymous) @ react-dom-16.14.0.js:61
unstable_runWithPriority @ react-16.14.0.js:25
Da @ react-dom-16.14.0.js:60
Pg @ react-dom-16.14.0.js:61
ha @ react-dom-16.14.0.js:60
Ja @ react-dom-16.14.0.js:224
enqueueForceUpdate @ react-dom-16.14.0.js:215
w.forceUpdate @ react-16.14.0.js:21
(anonymous) @ mobx-react-6.3.1.js:1
t.runReaction @ mobx-5.15.7.js:15
qe @ mobx-5.15.7.js:15
Ue @ mobx-5.15.7.js:15
Ge @ mobx-5.15.7.js:15
ke @ mobx-5.15.7.js:15
t.reportChanged @ mobx-5.15.7.js:1
e.notifyArraySplice @ mobx-5.15.7.js:15
e.spliceWithArray @ mobx-5.15.7.js:15
splice @ mobx-5.15.7.js:15
closePopup @ PerspectiveClient.6b134ea7380765101321.js:2
onScriptPopup @ PerspectiveClient.6b134ea7380765101321.js:2
processMessage @ PerspectiveClient.6b134ea7380765101321.js:2

```

---

<div class="post-metadata">

**Author:** ![plo](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plo/32/33875_2.png) [@plo](https://forum.inductiveautomation.com/u/plo)\
**Post date:** [December 19, 2022, 10:56pm UTC](https://forum.inductiveautomation.com/t/perspective-listener-not-found/67027/2 "2022-12-19T22:56:56Z")

</div>

Hello luc.martin,

Is there a visual issue that corresponds to that listener not found? Is a component not displaying properly?

Are you able to provide replications steps to get to that error? I'm assuming that error is found in Chrome's Web Dev console output?