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  • Neel Shah 3 posts 23 karma points
    18 days ago
    Neel Shah

    Value cannot be null. Parameter name: source


    Suddenly getting error of "Value cannot be null. Parameter name: source" while login in to Umbraco. But, website is running as expected. Can anyone please help me on it. We have Umbraco v6. It's high priority issue as want to update the contents.

    enter image description here

    Request you to please help me ASAP.

    Thanks in advance.

  • Marc Goodson 2046 posts 13490 karma points MVP 8x c-trib
    1 week ago
    Marc Goodson

    Hi Neel

    Are you able to check in the database your umbracoUser entry for the user you are logging in with and their corresponding details in teh

    umbracoUser2App table?

    (if my memory serves me correct)

    Basically in Umbraco 6, the User Ids are mapped to the apps they are allowed access to, eg content, media users etc

    What your error message is saying is that when Umbraco tries to get the the applications for the user you have logged in with, the cupboard is bare! and an error is thrown.

    Now just recycling the app pool may make this all ok, there might be lots of reasons why GetApplications() is no longer retrieving the applications...

    but it could also be somehow the mappings in that table were wiped?



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