Error: "undefined method `[]' for nil:NilClass

Good morning everyone,

I’m having a problem when executing a query; sometimes it stops working and displays the following message:

{
"data": {
"error": "undefined method `' for nil:NilClass"
},
"dashboard_element_id": "2218",
"id": "62890595559270b7459bee207b949172",
"status": "error"
}

Do you know what it could be?

Thank you very much.

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