we have integrated the dropbox in our suite commerce advanced website. and when we choose a file(stl format) for upload, its showing an error and not uploaded successfully. in the console showing an error path not found, error 409
A "path/not_found" Dropbox API error, such as for the /2/files/list_folder call you showed here, indicates that the API call failed because there was nothing currently found at the specified path in the connected account under the relevant root. For example, this can happen if there's a mistake or typo in the path value the app supplies, if the file/folder has been renamed, moved, or deleted from that path, if the app is not connected to the correct account for that particular path, etc.
path
When specifying the path, make sure you provide the full and accurate path for the desired file under the relevant root. For example, if you have a folder named "subfolder" inside a folder named "folder", the path would be "/folder/subfolder". You can find more information on path formats here.
"/folder/subfolder"
Here are several things you can check in particular to debug this:
""
path_lower
id
"/Apps/<app folder name>/folder/example.csv"
"/folder/example.csv"