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CMS 'All Properties' (On-Page Editing) mode is not opening . Giving JS error "Unexpected token"

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Hi There,

After upgrading CMS to 10.8 from 7.5 , everything is working fine except CMS edit mode is not loading. When we are trying to  open "All Properties" (edit-mode) for updating any content  from CMS , it is not loading and giving some JS errors:

 Uncaught SyntaxError: Unexpected token <  epi.cms.contentediting.editors.selectioneditor.js:1>
 Uncaught SyntaxError: Unexpected token <  epi.cms.contentediting.editors.contentareaeditor.js:1>

#186182
Dec 13, 2017 15:34
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Is this on every pagetype? every page? Do you have any custom property?

Regards

#186191
Dec 13, 2017 16:00
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Yes it is happening for every page and PageType

#186195
Dec 13, 2017 16:04
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Can you look in developer tools in Chrome and see if there are any 500's coming back from any requests in the network tab?

#186197
Dec 13, 2017 16:46
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Checked developer tools and no 500 is coming for any request.

#186198
Dec 13, 2017 16:48
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It looks like HTML is being returned instead of JS which could be causing the error. Is the site properly licenced too? 

#186199
Edited, Dec 13, 2017 16:55
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<p>Yes everything is fine from license side.</p>
#186201
Dec 13, 2017 17:06
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Can you try manually opening some of the requests that are served for the UI? Any issues should be visible when you view the contents.

#186202
Dec 13, 2017 17:11
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I have upgraded to version 11. All pages are fine but on one custom page i am not able to view All Properties mode. It is seemed like clicked but still showing block mode.

#202324
Mar 22, 2019 16:31
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What properties are on your model? Can you paste the code?

#202402
Mar 25, 2019 19:04
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