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this error comes out when I close the pop up screen and it does not comes out every time

how do I solve this?

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最佳答案

Hi friend;

Check your Function Destroy. In fact, it is using a field which is undefined.

You can print the field before you used it in the function and you will find False on the console.

Be sure your field is not empty and it will function correctly.

Regards.

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