Prepayments and deposits (Tables)
 12 Months Ended
Oct. 31, 2021
Prepayments And Deposits [Abstract]  
Schedule of prepayments and deposits
October 31, 2021October 31, 2020
$$
Prepaid lease deposits886,95133,501
Prepaid equipment deposits3,231,836—
Prepaid insurance3,839,88059,582
Other prepaids688,331870,868
8,646,998963,951