Authentication is successfully.

Not able to get the list items. After authentication nothing is working access denied issue is coming

Error:-

his may be due to the following reason: SharePoint API failed. See the details below. Status: 403 Details: {"error":{"code":"-2147024891, System.UnauthorizedAccessException","message":{"lang":"en-US","value":"Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"}}} Location: Untitled (line 8)

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Code: bot.execution.error