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Value cannot be null. Parameter name: key

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Hi
I am getting this error while saving any topic. When I check with the topic checker, there are no errors
How can I fix it?

 

Thanks in advance

  • Re: Value cannot be null. Parameter name: key

    Thanks, @renatoromao
    Your suggestion worked. 
    Sign-out and immediately sign-in didn't solve the issue. But when I signed off for the day, closed all browsers, and logged in the next morning, the issue was resolved. 

  • Verified answer
    renatoromao Profile Picture
    renatoromao 6,819 on at
    Re: Value cannot be null. Parameter name: key

    Hi @Anonymous ,

     

    Open the topic with an issue, validate and fix any error inside the topic, save again your topic.

    If the error persists, sign-out of your account and sign-in again.

    If the error persists, you can open a ticket to Microsoft support to help better.

    http://powervirtualagents.microsoft.com/en-us/support

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