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2I need to read my email attachments and send each attachment to webapi as base64. I used below expression to convert email attachment to base64. but flow shows error as "Correct to include a valid reference to 'Get_Attachment_(V3)' for the input parameter(s) of action 'HTTP'.
what should be correct expression to convert attachment to base64?
expression: base64(body('Get_Attachment_(V3)')?['contentBytes'])
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