Invalid display name

Hi, I have no idea why I’m having this error, but was wondering if anyone knows what it might mean or what I should look at. Any and all help would be appreciated!

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Can you please post your code to help give some context so that we can help you.

Explain what you are trying to do, what worked, what didn’t work, what you were expecting to happen etc. The more information you can provide the more likelihood there is that you will get a sensible answer.