SaveFileBytesToUserTempFolder returning an error message

We ended up saving the data to the user's folder instead of the temp folder:

'Export the data
Dim fileName As String = "IC_Detail.csv"
Dim filePath As String = "Documents/Users/" & StringHelper.RemoveSystemCharacters(si.UserName,False,False)
 					
'Export csvContent to User Folder
Dim fileBytes() As Byte = system.Text.Encoding.Unicode.GetBytes(csvContent.ToString)
	
Dim fileDataInfo As New XFFileInfo(FileSystemLocation.ApplicationDatabase, fileName, filePath)
Dim fileData As New XFFile(fileDataInfo, String.Empty, fileBytes)
brapi.FileSystem.InsertOrUpdateFile(si, fileData)