Android Question dropbox class module error in b4a 8.80

Sub Class_Globals
    Private mAccessToken As String   
    Private mApiV1url As String = "https://api.dropbox.com/1/"
    Private mApiV1notifyurl As String = "https://api-notify.dropbox.com/1/"
    Private mApiV1urlcontent As String = "https://api-content.dropbox.com/1/"
    Private mApiV2url As String = "https://api.dropboxapi.com/2/"
    Private mApiV2urlContent As String = "https://content.dropboxapi.com/2/"
                                                                               
    Private mCallback As Object
    Private mEvent As String
    Private mDebug As Boolean
    Private mChunkedUploadPos As Int
 Private mUploadlist As List
    Private mVersion As String = "0.92ß"
end

private Sub handleUploadSessionInit(Job As HttpJob, res As String)
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           Dim buffer(session.Get("packetsize")) As Byte