wich code php (and file) for category images?

wich code php (and file) for category images?

Hello,
Unfortunately I made a mistake and I erased some php code to display images of category in the shop...

Could you please tell me the php code (and in which file) I have to add to display again the images?(see attachment)

Thank you so much

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Aw: wich code php (and file) for category images?

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