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  • Edgar Rasquin 326 posts 925 karma points
    Jan 17, 2019 @ 14:07
    Edgar Rasquin
    0

    404 error in backend

    Doc Type Grid Editor Feedback
    Umbraco 7

    Hi there,

    enter image description here

    I keep getting this error in the backend. Weard thing is that I have changed nothing on this site for about 3-4 month. The error suddenly appeared.

    Can anyone help?

    Thanks

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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Jan 17, 2019 @ 14:21
    Lee Kelleher
    0

    You've hit the infamous trimStart bug. See this blog post for more details: https://umbraco.com/blog/chrome-66-causing-errors-on-some-umbraco-sites/

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  • Edgar Rasquin 326 posts 925 karma points
    Jan 17, 2019 @ 14:28
    Edgar Rasquin
    0

    Hi Lee, thanks for your reply. But is this issue not only concerning the use in Chrome? I am using Firefox and also tried in Edge with same result.

    Thanks

    Update:

    and also tried in Edge with same result

    Sorry, you were right. In Edge everything works just fine. But Firefox brings the error as described above.

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  • Lee Kelleher 4020 posts 15802 karma points MVP 13x admin c-trib
    Jan 17, 2019 @ 14:51
    Lee Kelleher
    100

    Hi Edgar,

    I've not been keeping track of browser versions... but from looking at MDN's docs, trimStart was added in Firefox v61. Which would pretty much be the same issue.

    Hopefully manually patching the "/Umbraco/lib/umbraco/Extensions.js" file (or upgrading Umbraco) will resolve this for you.

    Cheers,
    - Lee

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