# Blank Screen for Topic on Mobile Web: TypeError in Admin Console

**URL:** <https://meta.discourse.org/t/blank-screen-for-topic-on-mobile-web-typeerror-in-admin-console/148417>\
**Category:** Product Support\
**Created:** [April 18, 2020, 4:20am UTC](https://meta.discourse.org/t/blank-screen-for-topic-on-mobile-web-typeerror-in-admin-console/148417 "2020-04-18T04:20:39Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![thedavidprice](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/thedavidprice/32/172660_2.png) [@thedavidprice](https://meta.discourse.org/u/thedavidprice)\
**Post date:** [April 18, 2020, 4:20am UTC](https://meta.discourse.org/t/blank-screen-for-topic-on-mobile-web-typeerror-in-admin-console/148417/1 "2020-04-18T04:20:39Z")

</div>

iOS vs13.3.1  
Mobile Chrome v80.0.3987.95

I visited a Topic on our Forum and it loaded just the header (twice in one case, see screenshots after error output below) – effectively it was a blank page. I was logged out at the time. Refresh, new page and reload, and closing app and reload all did not resolve the problem. Very hard to diagnose from mobile.

I could not reproduce the issue on my desktop.

From my Admin Error Logs I was able to correlate two errors from the same time:

```terminal

# FIRST ERROR 8:09pm

TypeError: undefined is not a function (near '...l.replace...') Url: https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js Line: 1 Col

https://community.redwoodjs.com/assets/pretty-text-bundle-b028b1d5eed228f191f4f25757a12c99d1209f6a9ce91f98c6d378dd3589df7d.js:1:88120
https://community.redwoodjs.com/assets/application-c72a723208a0a310c886f34a1d7e6157d4a403f74e04829c4d23643ffea3593c.js:1:1218167
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:112413
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:419530
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:409113
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:422544
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:422239
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:415154
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:449567
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:449160
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:449067
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:474873
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:142193
V@https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:187610
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:145561
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:145879
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:145269
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:144382
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:144109
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:490070
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:489056
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:491075
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:496504
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:493039
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:497040
e@https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:29468
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:29788

# SECOND ERROR 8:51pm

TypeError: undefined is not an object (evaluating 'e.position().top') Url: https://community.redwoodjs.com/assets/application-c72a723208a0a310c886f34a1d7e6157d4a403f74e04829c4d23643ffea3593c.js Line:

l@https://community.redwoodjs.com/assets/application-c72a723208a0a310c886f34a1d7e6157d4a403f74e04829c4d23643ffea3593c.js:1:208270
t@https://community.redwoodjs.com/assets/application-c72a723208a0a310c886f34a1d7e6157d4a403f74e04829c4d23643ffea3593c.js:1:208295
scrolled@https://community.redwoodjs.com/assets/application-c72a723208a0a310c886f34a1d7e6157d4a403f74e04829c4d23643ffea3593c.js:1:1095126
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:490059
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:489056
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:491075
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:496504
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:493039
https://community.redwoodjs.com/assets/ember_jquery-3ed0ac532033dfeecf1ec0676df6716cd7076530930c656754ccf103d35b3e23.js:1:497862
[native code]

```

 ![IMG_3050.PNG](https://global.discourse-cdn.com/meta/original/3X/1/b/1b45b1a33341d5c8ea117f3fa5a9de37f464df9e.jpeg)

 ![IMG_3051](https://global.discourse-cdn.com/meta/original/3X/2/e/2eebdd6147ab2652fe9a245ad32a7fb6c0f2b2cb.png)

Please let me know if there’s any further information I can provide or steps to help assess.

---

_[View the full topic](https://meta.discourse.org/t/blank-screen-for-topic-on-mobile-web-typeerror-in-admin-console/148417)._